2BC3X-Y54Smart watch

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. FCC Radiation Exposure statement The device has been evaluatec to meel general RF exposure requirement. The device can be used in portable exposure condition without restriction.

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: Herland International Trading Inc FRN: 0036324101 Contact Name: Jianfeng Gao Address: 1370 Valley Vista Dr Ste 200 Diamond Bar California 91765-3921 Telephone No: 001-909-772-1888 Email: [email protected] Applicant: Company name: Dongguan Langchen Technology Co.,Ltd Product Description: Smart watch Grantee code: 2BC3X FCC ID: 2BC3X-Y54 FRN: 0034327130 Contact Name: Lan Zhou Address: Room 704, No.7 East Second Street, Xingfa South Road, Wusha, Chang'an Town, Dongguan City, Guangdong Province, China Telephone No: 18823709181 Email: [email protected] [Dongguan Langchen Technology Co.,Ltd] certifies that, as of the date of this filing of the application with the TCB, [Herland International Trading Inc] is our designated US agent for service of process for the above referenced FCC ID. [Dongguan Langchen Technology Co.,Ltd] accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any commission related proceeding involving equipment. [Herland International Trading Inc] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 2026/06/17 Applicant’s Name: Lan Zhou US Agent’s Name: Jianfeng Gao Title: Manager Title: Manager Signature Signature

Attestation Statement. Old Code: C5266091 24 New Code: 00015544 Ed.3 Change reason: FRN is added to the Applicant information section. 1/1 Dongguan Langchen Technology Co.,Ltd TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Dongguan Langchen Technology Co.,Ltd Grantee code: 2BC3X FCC ID: 2BC3X-Y54 FRN: 0034327130 Contact Name: Lan Zhou Address: Room 704, No.7 East Second Street, Xingfa South Road, Wusha, Chang'an Town, Dongguan City, Guangdong Province, China Telephone No: 18823709181 Fax No: Email: [email protected] i. [Dongguan Langchen Technology Co.,Ltd] (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. The applicant must sign this certification. ii. [Dongguan Langchen Technology Co.,Ltd] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. [Dongguan Langchen Technology Co.,Ltd] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] identified on the Covered List as an entity producing “covered” equipment . Date: 2026/06/17 Applicant’s Name: Lan Zhou Title: Manager Signature: 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

Dongguan Langchen Technology Co.,Ltd Code 00018768 Ed. 1 Item 1. The device is able to install software/program installation? ☐ Yes, go to Item 2. ☒ No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky cybersecurity or anti-virus software. Item 2. Technical Requirements for Kaspersky Cybersecurity Software: # General Requirements (For all Devices) Yes / No or N/A Comments 1 Internet connection for activation and updates (For all Operating Systems) N/A Device Smart watch Company name Dongguan Langchen Technology Co.,Ltd Grantee code 2BC3X FCC ID 2BC3X-Y54 FRN 0034327130 Contact name Lan Zhou Address Room 704, No.7 East Second Street, Xingfa South Road, Wusha, Chang'an Town, Dongguan City, Guangdong Province, China Telephone number 18823709181 E-mail [email protected] Chipset/module information AB5682 Operating System (if applicable) N/A Storage Capacity (hard drive or other permanent memory storage, if applicable) N/A 2 # General Requirements (For Windows Devices) Yes / No or N/A Comments 1 Storage: 1500 MB free space on the hard drive N/A 2 Operating System: Microsoft Windows 8, 8.1, 10 & 11 Home / Pro / Enterprise Microsoft Windows 7 Starter / Home Basic & Premium / Professional / Ultimate SP1 or higher N/A 3 Processor: 1 GHz or higher (x86 or x64) N/A 4 Memory (RAM)1 GB (32-bit) or 2 GB (64-bit) N/A 5 Screen Resolution: Minimum resolution of 1024 x 768 N/A # General Requirements (For macOS devices) Yes / No or N/A Comments 1 Operating System macOS® 13 – 14 N/A 2 Memory (RAM)4 GB N/A 3 Storage: 3455 MB free space on the hard drive N/A # General Requirements (For Android Devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 2 Operating System: Android™ 10 – 14 N/A 3 Screen Resolution: Minimum resolution of 320 x 480 N/A # General Requirements (for iOS devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 2 Operating System: iOS® 17 N/A # General Requirements (For Linux system) Yes / No or N/A Comments 3 1 Hard drive: 1 GB of free space N/A 2 CPU: Intel Pentium 1 GHz or higher N/A 3 RAM: 1 GB N/A 4 Minimum software requirements: AlmaLinux OS 8 or later; AlterOS 7.5 or later; Astra Linux Common Edition 2.12 or later; CentOS 6.7 or later; Debian GNU/Linux 10.0 or later; EulerOS 2.0 or later; Oracle Linux 7.3 or later ; Red Hat Enterprise Linux 6.7 or later ; Rocky Linux 8.5 or later ; SUSE Linux Enterprise Server 12.5 or later; Ubuntu 12.04 or later ; Uncom OS Home / Business / Education / Enterprise 2.2 or later; ALT Linux Workstaton / Workstation K / Server / Education 8 or later; ROSA Linux Workstation / Server 12 or later ; RED OS 7.3 and later ; N/A After reviewed the technical requirements, is the device capable of supporting the installation of Kaspersky software? ☐ Yes, go to Item 3. ☒ No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky software Item 3. Connectivity Capabilities: 4 # Physical Interface Purpose Justification 1 1 # Wireless Interface Purpose Justification 1 1 After the review of this items, the device: ☒ Cannot support installation of any cybersecurity or anti-virus software on the covered list. ☐ Potentially can operate with any cybersecurity or anti-virus software on the covered list – additional third- party proof is provided to demonstrate compliance with requirements as of 2.911(d)5(i),(ii) – “Proof of Compliance with Covered List Software Requirements” of this document applies Signature: Name: Lan Zhou Date:2026-06-17 1 The justification field is used to justify why the software cannot be received through that interface. Check the annex for more indications.

Dongguan Langchen Technology Co.,Ltd Product Similarity Declaration FCC ID: 2BC3X-Y54 Applicant: Dongguan Langchen Technology Co.,Ltd Address: Room 704, No.7 East Second Street, Xingfa South Road, Wusha, Chang’an Town, Dongguan City, Guangdong Province, China Manufacturer: Dongguan Langchen Technology Co.,Ltd Address: Room 704, No.7 East Second Street, Xingfa South Road, Wusha, Chang’an Town, Dongguan City, Guangdong Province, China Product Name: Smart watch Trade Mark: N/A Model Number: Y54, Y51C, Y52, Y55, Y55B, Y60, Y60D, T13P We (Dongguan Langchen Technology Co.,Ltd) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.,), same mechanical structure and design (including product enclosure, materials, etc.,), All models are the same as the samples except appearance, model name and appearance color. Applicant Signature: Printed Name: Lan Zhou Title:Manager Address: Room 704, No.7 East Second Street, Xingfa South Road, Wusha, Chang’an Town, Dongguan City, Guangdong Province, China Tel.: 18823709181 Email: [email protected]

Code 00014664 Ed. 8 (Old Code C5266091) 1/6 Annex I: TCB Assessment request under form 731 Applicant’s Business Name Dongguan Langchen Technology Co.,Ltd Applicant’s FRN 0034327130 Model Number Y54, Y51C, Y52, Y55, Y55B, Y60, Y60D, T13P ☐ Request for Grantee Code FCC ID: (Grantee + Applicant Code) 2BC3X-Y54 Address line 1 Room 704, No.7 East Second Street, Xingfa South Road, Wusha, Chang'an Town, Dongguan City, Guangdong Province, China Address line 2 City Dongguan Zip/ Postal Code State P.O. Box Country China Phone 18823709181 First Name Lan Fax Middle Name Email 18823709181@163. com Last Name Zhou Mail Stop Title Manager Sets forth:  Whereas the applicant is aware of the provisions established in the Specific Certification System SPC 1/107 (latest current edition), in compliance with FCC Rules.  Whereas agrees to respect and apply the provisions established in the Specific Certification System and the decisions made when applying its provisions including any requirements that may be prescribed in the certification scheme relating to the use of marks of conformity, and on information related to the product. In case of making statements about certification, these will be consistent with the scope of certification.  If the certification applies to ongoing production, the applicant agrees that the certified product continues to fulfil the product requirements.  Whereas, where a conformity assessment is requested, no other request has been made for the models indicated in any other Telecommunication certification body.  Whereas the applicant agrees to make the payments indicated the conformity assessment procedure according to the conditions of the offer.  That the applicant commits to facilitating LGAI Technological center S.A. (Applus) the performance of the evaluation and the monitoring, including the access to documentation, records, that may be required for the evaluation, if relevant.  That the applicant undertakes to investigate any complaint and deficiency on the products affecting conformance to certification requirements, to keep record of those and to keep record of any corrective action taken. All this information shall be supplied to LGAI Technological center S.A. (Applus).  That the applicant guarantees that any declaration made on the certification, such as documents, brochures or advertising, will meet the granted certificate and will meet the provisions stated in the Particular Certification System. No statement that might be considered as misleading or non- authorized shall be made. The certification shall not be used in any way that may cause bad reputation to LGAI Technological center S.A. (Applus). Code 00014664 Ed. 8 (Old Code C5266091) 2/6  That, in case of providing copies of the certification documents to others, the applicant commits to reproducing them in its entirety or in accordance with the provisions stated in the Particular Certification System.  That the applicant agrees that, in case of suspension, withdrawal or finalization of the certification, the applicant will stop using the reference to the certification in all the advertising material and the applicant will undertake the actions required in the General Specific Certification System 00007785.  That the applicant informs the certification body about changes that may affect its ability to comply with the certification requirements.  That the applicant commits to always fulfills the certification requirements, including implementing appropriate changes when they are communicated by LGAI Technological center S.A. (Applus).  That, in case of referring to its product certification in communication media, such as documents, brochures or advertising, the applicant commits to complies with the requirements of the certification body or as specified by the General and Particular Certification System.  That, in case of presenting historical tests, the laboratory that performed them is independent to its organization and manufactured products and does not take part in any of the processes of design, manufacturing, installation and maintenance of such products.  That LGAI Technological center S.A. (Applus) may issue a TCB report ing relation to the assessment according FCC Rules.  That the applicant commits to informing LGAI Technological center S.A. (Applus) when receiving or having received external consulting and to providing LGAI Technological center S.A. (Applus) with the name of the consulting company/inspector, if applicable. In case of receiving consulting advice, indicate the name of the consulting company or independent consultant: _________________________ Instead of Applicant, the original Grant is authorized to be mailed to (All questions regarding the application will be directed to this contact. The original grant and invoice will be sent to this contact.) Technical Contact Company Name Shenzhen DL Testing Technology Co., Ltd. Address 101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, China City Shenzhen Zip/ Postal Code State Guangdong P.O. Box Country China Phone 400-688-3552 Contact Person Jade Yang Fax Title Manager Email [email protected] Non - Technical Contact (U.S. Agent for Service of Process under FCC) Company Name Herland International Trading Inc Address 1370 Valley Vista Dr Ste 200 Diamond Bar California 91765-3921 City Zip/ Postal Code State P.O. Box Country United States Phone 001-909-772-1888 Contact Person Jianfeng Gao Fax Title Manager Email jianfenggao@hyunturlee- commerce.com Code 00014664 Ed. 8 (Old Code C5266091) 3/6 Name of Test Firm and contact person on file with the FCC, if different from applicant or contact person Company name Shenzhen DL Testing Technology Co., Ltd. Address 101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, Ch…

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C5266091_X10_Ed.2 1/1 Dongguan Langchen Technology Co.,Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2026.06.17 Subject: Request for Confidentiality FCC ID: 2BC3X-Y54 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, C5266091_X10_Ed.2 1/1 Signature: Name: Lan Zhou Title: Manager 2026.06.17

C5266091_X8_Ed.1 1/1 Letter of Authorization Dongguan Langchen Technology Co.,Ltd Company: Dongguan Langchen Technology Co.,Ltd Address: Room 704, No.7 East Second Street, Xingfa South Road, Wusha, Chang'an Town, Dongguan City, Guangdong Province, China Product Name: Smart watch Model Number: Y54, Y51C, Y52, Y55, Y55B, Y60, Y60D, T13P FCC Identifier: 2BC3X-Y54 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Lan Zhou Date: 2026.06.17 Title: Manager Signature of applicant:

Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 EUT PHOTO(External Photos) Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Overall view for Y51C Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Overall view for Y52 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Overall view for Y54 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Overall view for Y55B Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Overall view for Y55 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Overall view for Y60D Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Overall view for Y60 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Overall view for T13P Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Overall view for watchband Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 ※※※※※ END OF REPORT ※※※※※

Size: 15*10mm M/N: Y54 FCC ID: 2BC3X-Y54 Label location

Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 EUT PHOTO(Internal Photos) ANT Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 ※※※※※ END OF REPORT ※※※※※

FCC ID:2BC3X-Y54 RF Exposure Evaluation According to KDB 447498 D01 V06 and part 2.1093，Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, Mw) / (min. test separation distance, mm)] · [√f (GHz) ] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where f (GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest Mw and mm before calculation The result is rounded to one decimal place for comparison EIRP=E Meas +20log(d Meas )-104.7 EIRP is the equivalent isotropically radiated power, in dBm E Meas is the field strength of the emission at the measurement distance, in dBμV/m d Meas is the measurement distance, in m Here, BT Conducted power (dBm) Max tune-up (Mw) Frequency (MHz) Min. distance(mm) Calc. thresholds limit 1.76 1.4997 2480 5 0.47 3.0 So a SAR test is not required

Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260519048R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 1 of 37 FCC Part 15C Test Report FCC ID:2BC3X-Y54 Applicant: Dongguan Langchen Technology Co.,Ltd Address: Room 704, No.7 East Second Street, Xingfa South Road, Wusha, Chang’an Town, Dongguan City, Guangdong Province, China Manufacturer: Dongguan Langchen Technology Co.,Ltd Address: Room 704, No.7 East Second Street, Xingfa South Road, Wusha, Chang’an Town, Dongguan City, Guangdong Province, China Product Name: Smart watch Trade Mark: N/A Model Number: Y54, Y51C, Y52, Y55, Y55B, Y60, Y60D, T13P Date of Receipt: May. 19, 2026 Test Date: May. 19, 2026 – Jun. 24, 2026 Date of Report: Jun. 24, 2026 Prepared By: Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, China Applicable Standards: FCC PART 15 C 15.247 ANSI C63.10-2020+Cor 1-2023 Test Result: Pass Report Number: DLE-260519048R Prepared (Test Engineer): Alisa Song Reviewer (Supervisor): Jack Bu Approved (Manager): Jade Yang This test report is based on a single evaluation of one sample of above mentioned products. It is not permitted to be duplicated in extracts without written approval of Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260519048R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 2 of 37 Table of Contents Page 1 . SUMMARY OF TEST RESULTS 4 1.1 MEASUREMENT UNCERTAINTY 4 2 . GENERAL INFORMATION 5 2.1 GENERAL DESCRIPTION OF EUT 5 2.2 DESCRIPTION OF TEST MODES 6 2.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 6 2.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 7 2.5 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 7 2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS 8 3 . EMC EMISSION TEST 9 3.1 CONDUCTED EMISSION MEASUREMENT 9 3.1.1 POWER LINE CONDUCTED EMISSION LIMITS 9 3.1.2 TEST PROCEDURE 9 3.1.3 DEVIATION FROM TEST STANDARD 9 3.1.4 TEST SETUP 10 3.1.5 EUT OPERATING CONDITIONS 10 3.1.6 TEST RESULTS 10 3.2 RADIATED EMISSION MEASUREMENT 13 3.2.1 RADIATED EMISSION LIMITS 13 3.2.2 TEST PROCEDURE 14 3.2.3 DEVIATION FROM TEST STANDARD 14 3.2.4 TEST SETUP 14 3.2.5 EUT OPERATING CONDITIONS 15 3.2.6 TEST RESULTS (BETWEEN 9KHZ – 30 MHZ) 16 3.2.7 TEST RESULTS (BETWEEN 30MHZ – 1GHZ) 17 3.2.8 TEST RESULTS (1GHZ~25GHZ) 19 3.3 RADIATED BAND EMISSION MEASUREMENT 20 3.3.1 TEST REQUIREMENT: 20 3.3.2 TEST PROCEDURE 20 3.3.3 DEVIATION FROM TEST STANDARD 20 3.3.4 TEST SETUP 21 3.3.5 EUT OPERATING CONDITIONS 21 3.4 CONDUCTED BAND EDGE EMISSION&CONDUCTED SPURIOUS EMISSIONS MEASUREMENT 23 3.4.1 APPLICABLE STANDARD 23 3.4.2 TEST PROCEDURE 23 Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260519048R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 3 of 37 Table of Contents Page 3.4.3 DEVIATION FROM STANDARD 23 3.4.4 TEST SETUP 23 3.4.5 EUT OPERATION CONDITIONS 24 3.4.6 TEST RESULTS 24 4 . PEAK OUTPUT POWER 28 4.1 APPLIED PROCEDURES / LIMIT 28 4.1.1 TEST PROCEDURE 28 4.1.2 DEVIATION FROM STANDARD 28 4.1.3 TEST SETUP 28 4.1.4 EUT OPERATION CONDITIONS 28 4.1.5 TEST RESULTS 29 5 . POWER SPECTRAL DENSITY TEST 31 5.1 APPLIED PROCEDURES / LIMIT 31 5.1.1 TEST PROCEDURE 31 5.1.2 DEVIATION FROM STANDARD 31 5.1.3 TEST SETUP 31 5.1.4 EUT OPERATION CONDITIONS 31 5.1.5 TEST RESULTS 32 6 . 6DB BANDWIDTH TEST 34 6.1 APPLIED PROCEDURES / LIMIT 34 6.1.1 TEST PROCEDURE 34 6.1.2 DEVIATION FROM STANDARD 34 6.1.3 TEST SETUP 34 6.1.4 EUT OPERATION CONDITIONS 34 6.1.5 TEST RESULTS 35 7 . ANTENNA REQUIREMENT 37 7.1 STANDARD REQUIREMENT 37 7.2 EUT ANTENNA 37 8 . TEST SETUP PHOTO 37 9 . EUT PHOTO 37 Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260519048R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 4 of 37 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.247) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS 15.247(c) Radiated Spurious Emission PASS 15.205 Band Edge Emission PASS 15.247(b) Peak Output Power PASS 15.247(a)(2) 6dB Bandwidth PASS 15.247(e) Power Spectral Density PASS 15.203 Antenna Requirement PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report Test lab: Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, China FCC Test Firm Registration Number: 854456 Designation Number: CN1307 IC Registered No.: 27485 CAB ID.: CN0118 1.1 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %。 No. Item Uncertainty 1 Conducted Emission Test ±2.56dB 2 RF power,conducted ±0.42dB 3 Spurious emissions,conducted ±2.76dB 4 All emissions,radiated(<1G) ±3.65dB 5 All emissions,radiated(>1G) ±4.89dB 6 Temperature ±0.5°C 7 Humidity ±2% 8 6dB Bandwidth ±0.2MHz 9 Power Spectral Density ±0.3dBm Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260519048R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 5 of 37 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT Product Name: Smart watch Trade Mark: N/A Model Number: Y54, Y51C, Y52, Y55, Y55B, Y60, Y60D, T13P Test Model: Y54 Model Difference: All models are same as the samples except model name, appearance and appearance color, they have the same structure and circuit. Operation Frequency: 2402~2480MHz Channel numbers: 40 Channels Data Rate: 1 Mbps Channel separation: 2MHz Modulation technology: GFSK Antenna Type: Integral Antenna Antenna gain: 1.98 dBi Power supply: Input: DC 5V Battery: DC…

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Antenna specification 1 Dongguan Langchen Technology Co.,LtdRoom 704, No.7 East Second Street, Xingfa South Road, Wusha, Chang’an Town, Dongguan City, Guangdong Province, China Manufacturer: Table of contents 2. Antenna appearance and dimensions3. Detailed information about antenna parameters 1. antenna parameters 2 1 . ant enna parameters 3 Frequency 2402 ～ 2480MHZ Effi AVG 40.22% PK Gain 1.98 dBi SWR <3 Antenna Type On board copper Antenna polarization Linear polarizationPART NO B01 Antenna size L11.8*W0.5mm 2. Antenna appearance and dimensions 4 Antenna No.: B01; Antenna size : L11.8*W0.5mm 3. Detailed information about antenna parameters 5 Antenna Pattern: Antenna Effeciency S11 Parameters Free space Frequency (MHz) Efficiency (%) Efficiency (dBi) Gain(dBi) 2400 39.6 -5.02 1.98 2410 40.36 -4.94 1.35 2420 40.48 -4.93 1.31 2430 41.32 -4.84 1.57 2440 41.63 -4.81 0.98 2450 40.93 -4.88 1.33 2460 40.08 -4.97 1.25 2470 39.19 -5.07 1.29 2480 38.37 -5.16 -1.83 The End 6

Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 EUT TEST PHOTO Radiated Measurement Photos Shenzhen DL Testing Technology Co., Ltd. FCC ID: 2BC3X-Y54 Conducted Measurement Phot…

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