2AP4P-OPENEAROpen-Ear Headphones

Dual Listening Sports Headphones FCC Warning Statement Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 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. FCC Warning Statement 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 evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. 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. FCC Warning Statement

SHENZHEN ALEX TECHNOLOGY CO., LTD. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: SHENZHEN ALEX TECHNOLOGY CO., LTD. Address: UNIT 407-409, HEHUAN BUSINESS CENTER, BLD.36 YINTIAN GONGYE RD, BAO'AN, Shenzhen, China Product Name: Open-Ear Headphones FCC ID: 2AP4P-OPENEAR Model(s): OPENEAR Duo, OPENEAR Rondo, OPENEAR Lento, OPENEAR Mezzo, OPENEAR B1 2.911(d)(5)(i) Equipment Type We, [SHENZHEN ALEX TECHNOLOGY CO., LTD.] (“the applicant”) certify that the equipment for which authorization is sought through certification is not:  Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules.  Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Sam Liu Date: May 18, 2023 Title and Company name: Manager; SHENZHEN ALEX TECHNOLOGY CO., LTD. NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

SHENZHEN ALEX TECHNOLOGY CO., LTD. 2.911 (d)(5)(ii) Applicant Attestation v1.2 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: SHENZHEN ALEX TECHNOLOGY CO., LTD. Address: UNIT 407-409, HEHUAN BUSINESS CENTER, BLD.36 YINTIAN GONGYE RD, BAO'AN, Shenzhen, China Product Name: Open-Ear Headphones FCC ID: 2AP4P-OPENEAR Model(s): OPENEAR Duo, OPENEAR Rondo, OPENEAR Lento, OPENEAR Mezzo, OPENEAR B1 2.911(d)(5)(ii) Applicant filing We, [SHENZHEN ALEX TECHNOLOGY CO., LTD.] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 , established pursuant to § 1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Sam Liu Date: May 18, 2023 Title and Company name: Manager; SHENZHEN ALEX TECHNOLOGY CO., LTD. NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

SHENZHEN ALEX TECHNOLOGY CO., LTD. Sec tion 2.911 (d)(7) USA Agent for Servic e of Pr oces s Company name: SHENZHEN ALEX TECHNOLOGY CO., LTD. Address: UNIT407-409, HEHUAN BUSINESS CENTER, BLD.36 YINTIAN GONG YE RD,BAO'AN ,SHENZHEN,CHINA Product Name: Open-Ear Headphones FCC ID: 2AP4P-OPENEAR Model(s):OPENEAR Duo,OPENEAR Rondo, OPEN EAR Lento, OPEN EAR Mezzo, OPENEARB1 2.911 ( d)( 7) USA Designated Agent for Service of Process We, [SHENZHEN ALEX TECHNOLOGY CO., LTD.] (the applicant") designate [UA INTERNATIONAL INC.] NO TEt for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our c onsent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the c onclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. USA Agent Company name: UA INTERNATIONAL INC. Address: 5030 Boardwalk Dr, Suite 818 Colorado Springs, CO 80919, United States FRN: 0033510736 Applicant Company name: SHENZHEN ALEX TECHNOLOGY CO., LTD. Address: UNIT 407-409, HEHUAN BUSINESS CENTER, BLD.36 YINTIAN GONGYE RD, BAO'AN, Shenzhen, China FCC Grantee Code: 2AP4P Contact Name: Sam Liu Telephone No: 177 2263 5667 Email:[email protected] Signature: Title: Manager 2.911 (d)(7)USAAgentvl.3 SHENZHEN ALEX TECHNOLOGY CO., LTD. Date: 2023/5/20 Date: 2023/5/19 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Register document 2022-28263 published on 02/06123 https://www. f ederalre gister. gov/documents/2023/02/06/2022-28 263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the 2.911 (d)(7)USAAgentvl.3

< SHENZHEN ALEX TECHNOLOGY CO., LTD. > Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD21046 Date: May 18, 2023 Subject; Request for Long Term Confidentiality FCC ID: 2AP4P-OPENEAR To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Sam Liu Title: Manager

SHENZHEN ALEX TECHNOLOGY CO., LTD. Letter of Authorization Company: SHENZHEN ALEX TECHNOLOGY CO., LTD. Address: UNIT 407-409, HEHUAN BUSINESS CENTER, BLD.36 YINTIAN GONGYE RD, BAO'AN, Shenzhen, China Product name: Open-Ear Headphones Trade name: ALOVA Model name: OPENEAR Duo, OPENEAR Rondo, OPENEAR Lento, OPENEAR Mezzo, OPENEAR B1 FCC Identifier: 2AP4P-OPENEAR We authorize MiCOM LabsInc, 575 Boulder Court, Pleasanton, California94566, USA, to act on our behalf on all matters concerning the above named equipment. Any individual within MiCOM Labs is authorized to act on our behalf and take action on the application. We declare that MiCOM LabsInc, 575 Boulder Court, Pleasanton, California 94566, USA, 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 MiCOM Labs on our behalf shall have the same effect as acts of our own. Name: Sam Liu Date: May 18, 2023 Title: Manager Signature of applicant:

Model Difference Declaration To Whom It May Concern, We, SHENZHEN ALEX TECHNOLOGY CO., LTD. Product name: Open-Ear Headphones Trade name: ALOVA Model name: OPENEAR Duo, OPENEAR Rondo, OPENEAR Lento, OPENEAR Mezzo, OPENEAR B1 All model’s the function, software and electric circuit are the same, only with a product color and model named different. Test sample model: OPENEAR Duo. Please contact me if you have any question. Name: Sam Liu Date: May 18, 2023 Title: Manager Signature of applicant:

Model: OPENEAR Duo Model: OPENEAR Duo Model: OPENEAR Duo

FCC ID LABEL: Label Location: Model: OPENEAR Duo FCC ID: 2AP4P-OPENEAR

Model: OPENEAR Duo Model: OPENEAR Duo BT Antenna Model: OPENEAR Duo Model: OPENEAR Duo

MPE ESTIMATION FCC ID: 2AP4P-OPENEAR 1. Limit for Portable Equipment Exposure Frequency 1-g SAR 100MHz-6GHz 3.0 According to 447498 D01 General RF Exposure Guidance v06 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(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 2. Estimation Result BT 8DPSK (Worst case): Frequency (MHz) Reading result(dBμV/m) PK Output Power (dBm) Output Power(mW) Test Separation Distance (mm) Measurement Result 1-g SAR 2402 99.89 4.69 2.944 5 0.9125 3.0 Note: PK Output Power = Conducted Power. Conducted Power see the test report UNIA23050919ER-61. The SAR evaluation is not required. ------The End------

深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6x 0.4(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification DOCUMENT YF3216F4P2G4502 REV. NO. B PAGE 1 OF 12 YF 3216 F4 P 2G45 02 1 2 3 4 5 6 3.2X1.6X0.4 (mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification 1. Product Number 1 2 3 4 5 6 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6x 0.4(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification DOCUMENT YF3216F4P2G4502 REV. NO. B PAGE 2 OF 12 2. Features *Stable and reliable in performances *Low temperature coefficient of frequency *Low profile, compact size *RoHS compliance *SMT processes compatible 3. Applications *Bluetooth earphone systems *Hand-held devices when WiFi /Bluetooth functions are needed, e.g., Smart phone. *IEEE802.11 b/g/n *ZigBee *Wireless PCMCIA cards or USB dongle 4. Description Yingfeng chip antenna series are specially designed for WiFi/Bluetooth applications. Based on yingfeng proprietary design and processes, this chip antenna has excellent stability and sensitivity to consistently provide high signal reception efficiency. 5. Electrical Specifications (80 x 40 mm 2 ground plane) 5-1. Electrical Table Characteristics Specifications Unit Outline Dimensions 3.2x1.6x0.4 mm Working Frequency 2400~2500 MHz VSWR 2 Max. Impedance 50  Polarization Linear Polarization Gain Peak 3.0(typical) dBi Efficiency 78 (typical) % 5-2. Return Loss & VSWR 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6x 0.4(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification DOCUMENT YF3216F4P2G4502 REV. NO. B PAGE 3 OF 12 Return Loss (S 11 ) VSWR(S 11 ) 6. Antenna Dimensions & Test Board (unit: mm) a. Antenna Dimensions 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6x 0.4(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification DOCUMENT YF3216F4P2G4502 REV. NO. B PAGE 4 OF 12 b. Test Board with Antenna 80 40 Unit: mm 7. Radiation Pattern (80 x 40 mm 2 ground plane) 7-1. 3D Gain Pattern @ 2442 MHz Z X Y 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6x 0.4(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification DOCUMENT YF3216F4P2G4502 REV. NO. B PAGE 5 OF 12 7-2. 3D Efficiency Table Frequency( MHz) 2400 2410 2420 2430 2442 2450 2460 2470 2480 2490 2500 Efficiency (dB) -1.4 -1.0 -0.9 -0.7 -0.7 -0.8 -0.9 -1.1 -1.2 -1.3 -1.4 Efficiency (%) 72.8 73.7 74.3 74.4 75.5 75.0 74.0 73.6 73.1 72.6 71.5 Gain (dBi) 2.1 2.2 2.3 2.4 2.5 2.5 2.4 1.8 1.7 1.6 1.4 Y X Z Y X X Y Z 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6x 0.4(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification DOCUMENT YF3216F4P2G4502 REV. NO. B PAGE 6 OF 12 7-3. 3D Efficiency vs. Frequency 8. Layout Guide a. Solder Land Pattern: Land pattern for soldering (gray marking areas) is as shown below. Depending on Customer’s requirement, matching circuit as shown below is also recommended. Efficiency vs. Frequency 50 60 70 80 90 100 24002410242024302442245024602470248024902500 Frequency(MHz) Efficiency(%) 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6x 0.4(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification DOCUMENT YF3216F4P2G4502 REV. NO. B PAGE 7 OF 12 Top View Bottom View Unit： mm 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6x 0.4(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification DOCUMENT YF3216F4P2G4502 REV. NO. B PAGE 8 OF 12 9. Frequency tuning a. Chip antenna tuning scenario： b. Matching c ircuit：(Center frequency is about 2442 MHz @ 80 x 40 mm 2 ground plane) System Matching Circuit Component Location Description Vendor Toleranc e 1 1.2 pF* Murata (0402) ±0.1 pF 2 10PF* Murata(0402) ±0.5 PF 3 N/A* - - Fine tuning element 4 1.5 pF* Murata (0402) ±0.1 pF *Typical reference values which may need to be changed when circuit boards or part vendors are different. Matching circuit Feed 4. Fine tuning elemet 1 2 3 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6x 0.4(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification DOCUMENT YF3216F4P2G4502 REV. NO. B PAGE 9 OF 12 c. Fine tuning element vs. Center frequency 10. Soldering Conditions a. Typical Soldering Profile for Lead-free Process Time (s.) 60-180s 60-150s 20-40 s Pre-heati ng 150-200° C 217°C 260° C Temperature (°C) 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6x 0.4(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification DOCUMENT YF3216F4P2G4502 REV. NO. B PAGE 10 OF 12 11. Packing (1) Quantity/Reel: 3000 pcs/Reel (2) Plastic tape: 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6x 0.4(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300B) Engineering Specification DOCUMENT YF3216F4P2G4502 REV. NO. B PAGE 11 OF 12 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.…

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Page 1 of 41 Report No.: UNIA23050919ER-61 FCC RADIO TEST REPORT FCC ID: 2AP4P-OPENEAR Sample： Open-Ear Headphones Trade Name： ALOVA Main Model： OPENEAR Duo Additional Model： OPENEAR Rondo, OPENEAR Lento, OPENEAR Mezzo, OPENEAR B1 Report No.： UNIA23050919ER-61 Prepared for SHENZHEN ALEX TECHNOLOGY CO., LTD. UNIT 407-409, HEHUAN BUSINESS CENTER, BLD.36 YINTIAN GONGYE RD, BAO'AN, Shenzhen, China Prepared by Shenzhen ZKT Technology Co., Ltd. 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Page 2 of 41 Report No.: UNIA23050919ER-61 TEST RESULT CERTIFICATION Applicant .............................. : SHENZHEN ALEX TECHNOLOGY CO., LTD. Address ................................. : UNIT 407-409, HEHUAN BUSINESS CENTER, BLD.36 YINTIAN GONGYE RD, BAO'AN, Shenzhen, China Manufacturer ........................ : SHENZHEN ALEX TECHNOLOGY CO., LTD. Address ................................. : UNIT 407-409, HEHUAN BUSINESS CENTER, BLD.36 YINTIAN GONGYE RD, BAO'AN, Shenzhen, China Product description Product .................................. : Open-Ear Headphones Trade Name ........................... : ALOVA Model Name .......................... : OPENEAR Duo, OPENEAR Rondo, OPENEAR Lento, OPENEAR Mezzo, OPENEAR B1 Test Methods ........................ : FCC Rules and Regulations Part 15 Subpart C Section 15.249, ANSI C63.10: 2013 This device described above has been tested by Shenzhen ZKT Technology Co., Ltd., and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of UNI, this document may be altered or revised by Shenzhen United Testing Technology Co., Ltd., personnel only, and shall be noted in the revision of the document. Date of Test Date (s) of performance of tests ............. : May 10, 2023 ~ May 17, 2023 Date of Issue .......................................... : May 18, 2023 Test Result.............................................. : Pass Prepared by: Jason Ye/Editor Reviewer: Kelly Cheng/Supervisor Approved & Authorized Signer: Liuze/Manager Page 3 of 41 Report No.: UNIA23050919ER-61 Table of Contents Pages 1 TEST SUMMARY 4 1.1 TEST PROCEDURES AND RESULTS 4 1.2 TEST FACILITY 5 1.3 MEASUREMENT UNCERTAINTY 6 1.4 ENVIRONMENTAL CONDITIONS 6 2 GENERAL INFORMATION 7 2.1 GENERAL DESCRIPTION OF EUT 7 2.2 CARRIER FREQUENCY OF CHANNELS 8 2.3 TEST MODE 8 2.4 TEST SETUP 9 2.5 EQUIPMENT USED IN TESTED SYSTEM 9 2.6 MEASUREMENT INSTRUMENTS LIST 10 3 CONDUCTED EMISSION 11 3.1 TEST LIMIT 11 3.2 TEST SETUP 11 3.3 TEST PROCEDURE 12 3.4 TEST RESULT 12 4 RADIATED EMISSION 15 4.1 TEST LIMIT 15 4.2 TEST SETUP 16 4.3 TEST PROCEDURE 17 4.4 TEST RESULT 17 5 BAND EDGE 29 5.1 TEST LIMIT 29 5.2 TEST PROCEDURE 29 5.3 TEST RESULT 29 6 OCCUPIED BANDWIDTH 32 6.1 TEST SETUP 32 6.2 TEST PROCEDURE 32 6.3 TEST RESULT 32 7 ANTENNA REQUIREMENT 39 8 PHOTO OF TEST 40 8.1 RADIATED EMISSION 40 8.2 CONDUCTED EMISSION 41 Page 4 of 41 Report No.: UNIA23050919ER-61 1 TEST SUMMARY 1.1 TEST PROCEDURES AND RESULTS Note: “N/A” denotes test is not applicable in this Test Report. Item FCC Rules Description Of Test Result 1 FCC Part 15.207 Conducted Emission Pass 2 FCC Part 15.209/15.249 Radiated Emission Pass 3 FCC Part 15.249/15.205 Band Edge Pass 4 FCC Part 15.215 Occupied Bandwidth Pass 5 FCC Part 15.203 Antenna Requirement Pass Page 5 of 41 Report No.: UNIA23050919ER-61 1.2 TEST FACILITY Test Firm : Shenzhen ZKT Technology Co., Ltd. Address : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China The testing quality ability of our laboratory meet with "Quality Law of People's Republic of China" Clause 19.The testing quality system of our laboratory meets with ISO/IEC-17025 requirements. This approval result is accepted by MRA of APLAC. Our test facility is recognized, certified, or accredited by the following organizations: Designation Number: CN1299 The EMC Laboratory has been accredited by A2LA, and in compliance with ISO/IEC 17025:2017 General Requirements for testing Laboratories. FCC Registration Number: 692225 The EMC Laboratory has been registered and fully described in a report filed with the (FCC) Federal Communications commission. IC Registration Number: 27033 The EMC Laboratory has been registered and fully described in a report filed with the (IC) Industry Canada. Page 6 of 41 Report No.: UNIA23050919ER-61 1.3 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 %. A. Conducted Measurement: Test Site Method Measurement Frequency Range U, (dB) NOTE UNI ANSI 9kHz ~ 150kHz 2.96 150kHz ~ 30MHz 2.44 B. Radiated Measurement: Test Site Method Measurement Frequency Range U, (dB) NOTE UNI ANSI 9kHz ~ 30MHz 2.50 30MHz ~ 1000MHz 4.80 Above 1000MHz 4.13 C. RF Conducted Method: Item Measurement Uncertainty Uncertainty of total RF power, conducted U c = ±0.8 dB Uncertainty of RF power density, conducted U c = ±2.6 dB Uncertainty of spurious emissions, conducted U c = ±2 % Uncertainty of Occupied Channel Bandwidth U c = ±2 % 1.4 ENVIRONMENTAL CONDITIONS During the measurement the environmental conditions were within the listed ranges: Temperature: 15~35 °C Relative Humidity: 30~60 % Air Pressure: 950~1050 hPa Page 7 of 41 Report No.: UNIA23050919ER-61 2 GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT Product: Open-Ear Headphones Trade Name: ALOVA Main Model: OPENEAR Duo Additional Model: OPENEAR Rondo, OPENEAR Lento, OPENEAR Mezzo, OPENEAR B1 Model Difference: All model’s the function, software and electric circuit are the same, only with a product color and model named different. Test sample model: OPENEAR Duo. FCC ID: 2AP4P-OPENEAR Operat…

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Model: OPENEAR Duo Radiated Emission test Model: OPENEAR Duo Conducted Emission test