2AP4P-OPENEAR-LENTOOpen Ear Headphones

Headphones Specifications How to Wear Put the earhook behind the ear and rotate the headset until it fits your ear. Operations Power On/Off Power On: The earbuds turn on automatically when open the lid of charging case. Prompt: power on pairing; Power Off: The earbuds turn off when placed into the charging case and closed the lid. Or press and hold the button on the earbuds for 5 sec. Prompt: power off. BT Connection Select "OPENEAR Lento" in BT menu to connect. Prompt: connected. Click 1X of any earbuds. Answer/Hang Up A Call: Click 1x of any earbuds. Reject A Call: Hold on 1.5s of any earbuds. Answer/Hang Up/Reject A Call Play/Pause Music Previous/Next Track Previous Track: Click 3X of Left earbud. Next Track: Click 3X of Right earbud. Model: OPENEAR Lento Type: Truly Wireless Open Ear Headphones Version: 5.3 Connection: ≈10m Weight: 20g (10g each earbud) Earbud Play Time: ≈4.5H (80% volume) Earbud Charging: 1.5H Case Charge Earbud： 2 Times Case Charging: 2H Charging Voltage: DC 5V Truly Wireless Open Ear Headphones OPENEAR Lento User Manual 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. 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. Attentions Volume Up/Down Volume Up: Click 2X of Right earbud. Volume Down: Click 2X of Left earbud. Activate Voice Command Hold on for 2s of any earbuds to activate voice assistant. Low Battery The white LED flashes when the earbud battery is lower than 10%, prompt: battery low. Charging Case LED Display The digital display in the charging case represents the remaining battery of charging case. Please use the DC 5V adapter and Type-C charging cable to charge. Charge Place the earbuds into the charging case. Green LED is on while charging. The LED is off when fully charged. 1. Listening to loud music for a long time may cause discomfort,please use medium volume if possible. Do not use high volume for long periods of time. 2. Using headphones will affect your perception of the surrounding environment. Pay more attention when using headphones. 3. Do not remove or modify the headphone,as this may cause damage or burn out. 4. Do not throw,twist on headphones or put them into a fire. 5. Keep it away from fire,hydration and high pressure equipment. 6. Not suitable for children under 10-year-old containing small parts. 7. Do not classify it as household waste. Please send it to the local electrical equipment recycling station. Note: The company does not assume any responsibility for the loss of personal property caused by the violation of the above warnings. 99% LED indicatorType-C Charging LR

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: 7th Floor, Building B, Tangxi Zhigu, Xijing Road, Xixiang, Baoan, Shenzhen, China Product Name: Open Ear Headphones FCC ID: 2AP4P-OPENEAR-LENTO Model(s): OPENEAR Lento, OPENEAR Alto, OPENEAR Mosso, OPENEAR Mezzo 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: Dec. 05, 2023 Title and Company name: Product 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: 7th Floor, Building B, Tangxi Zhigu, Xijing Road, Xixiang, Baoan, Shenzhen, China Product Name: Open Ear Headphones FCC ID: 2AP4P-OPENEAR-LENTO Model(s): OPENEAR Lento, OPENEAR Alto, OPENEAR Mosso, OPENEAR Mezzo 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: Dec. 05, 2023 Title and Company name: Product 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. 2.911 (d)(7)USA Agent v1.5 Section 2.911(d)(7) USA Agent for Service of Process Company name: SHENZHEN ALEX TECHNOLOGY CO., LTD. Address: 7th Floor, Building B, Tangxi Zhigu, Xijing Road, Xixiang, Baoan, Shenzhen, China Product Name: Open Ear Headphones FCC ID: 2AP4P-OPENEAR-LENTO Model(s): OPENEAR Lento, OPENEAR Alto, OPENEAR Mosso, OPENEAR Mezzo 2.911(d)(7) USA Designated Agent for Service of Process We, [ SHENZHEN ALEX TECHNOLOGY CO., LTD.] (“the applicant”) designate [GRZAN GROUP INC] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We acknowledge our consent 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 we the grantee have permanently terminated all marketing and importation of the applicable equipment within the U.S., or at 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 at the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Applicant Company name: SHENZHEN ALEX TECHNOLOGY CO., LTD. Address: 7th Floor, Building B, Tangxi Zhigu, Xijing Road, Xixiang, Baoan, Shenzhen, China Grantee FRN Number: 0027601210 FCC Grantee Code: 2AP4P Contact Name: Sam Liu Telephone No: 177 2263 5667 Email: [email protected] Signature: Manager 2.911 (d)(7)USA Agent v1.5 SHENZHEN ALEX TECHNOLOGY CO., LTD. Title: Product Manager Date: 2023/12/04 Date: 2023/12/04 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Reg ister document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

SHENZHEN ALEX TECHNOLOGY CO., LTD. Agent Authorization Company: SHENZHEN ALEX TECHNOLOGY CO., LTD. Address: 7th Floor, Building B, Tangxi Zhigu, Xijing Road, Xixiang, Baoan, Shenzhen, China Product Name: Open Ear Headphones Model Number(s): OPENEAR Lento, OPENEAR Alto, OPENEAR Mosso, OPENEAR Mezzo Product Description: Open Ear Headphones We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required 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. Signature: Date: Dec. 05, 2023 Name: Sam Liu Title: Product Manager Company: SHENZHEN ALEX TECHNOLOGY CO., LTD.

< SHENZHEN ALEX TECHNOLOGY CO., LTD. > Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD21046 Date: Dec. 05, 2023 Subject; Request for Long Term Confidentiality FCC ID: 2AP4P-OPENEAR-LENTO 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: Product Manager

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 Lento, OPENEAR Alto, OPENEAR Mosso, OPENEAR Mezzo 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 Lento. Please contact me if you have any question. Name: Sam Liu Date: Dec. 05, 2023 Title: Product Manager Signature of applicant:

Model: OPENEAR Lento Model: OPENEAR Lento Model: OPENEAR Lento Model: OPENEAR Lento Model: OPENEAR Lento

FCC ID LABEL: Label Location: FCC ID: 2AP4P-OPENEAR-LENTO

Model: OPENEAR Lento Model: OPENEAR Lento Chip Antenna Model: OPENEAR Lento Chip Antenna Model: OPENEAR Lento

MPE ESTIMATION FCC ID: 2AP4P-OPENEAR-LENTO 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 Frequency Reading result(dBμV/m) PK Output Power (dBm) Output Power(mW) Test Separation Distance (mm) Measurement Result 1-g SAR 8DPSK 2402 MHz (Left earphone) 94.87 -0.33 0.927 5 0.2873 3.0 π/4 DQPSK 2402 MHz (Right earphone) 94.48 -0.72 0.847 5 0.2625 3.0 Note: PK Output Power (dBm)= Reading result(dBμV/m)-95.2 Reading result see the test report UNIA23111509ER-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 TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：1.6 x0.8x 0.8(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF1608) Engineering Specification DOCUMENT YF1608F1P2G45 REV. NO. C PAGE 1 OF 9 1.6X0.8X0.5 (mm) WiFi/Bluetooth Ceramic Chip Antenna (YF1608) Engineering Specification 1. Product Number YF 1608 F1 P 2G45 1 2 3 4 5 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：1.6 x0.8x 0.8(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF1608) Engineering Specification DOCUMENT YF1608F1P2G45 REV. NO. C PAGE 2 OF 9 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 1.6x0.8x0.8 mm Working Frequency 2400~2500 MHz VSWR 2 Max. Impedance 50  Polarization Linear Polarization Gain Peak 2.5 (typical) dBi Efficiency 58 (typical) % 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：1.6 x0.8x 0.8(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF1608) Engineering Specification DOCUMENT YF1608F1P2G45 REV. NO. C PAGE 3 OF 9 5-2. Return Loss & VSWR 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 TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：1.6 x0.8x 0.8(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF1608) Engineering Specification DOCUMENT YF1608F1P2G45 REV. NO. C PAGE 4 OF 9 b. Test Board with Antenna Unit: mm 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：1.6 x0.8x 0.8(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF1608) Engineering Specification DOCUMENT YF1608F1P2G45 REV. NO. C PAGE 5 OF 9 7. Radiation Pattern (80 x 40 mm 2 ground plane) 7-1. 3D Gain Pattern @ 2442 MHz Z X Y Y X 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：1.6 x0.8x 0.8(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF1608) Engineering Specification DOCUMENT YF1608F1P2G45 REV. NO. C PAGE 6 OF 9 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 (%) 53.8 54.7 55.3 564 57.5 58.0 57.0 56.6 55.1 54.6 54.5 Gain (dBi) 2.1 2.2 2.3 2.4 2.5 2.5 2.4 1.8 1.7 1.6 1.4 X Y Z 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：1.6 x0.8x 0.8(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF1608) Engineering Specification DOCUMENT YF1608F1P2G45 REV. NO. C PAGE 7 OF 9 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：1.6 x0.8x 0.8(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF1608) Engineering Specification DOCUMENT YF1608F1P2G45 REV. NO. C PAGE 8 OF 9 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：1.6 x0.8x 0.8(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF1608) Engineering Specification DOCUMENT YF1608F1P2G45 REV. NO. C PAGE 9 OF 9

Page 1 of 62 Report No.: UNIA23111509ER-61 FCC RADIO TEST REPORT FCC ID: 2AP4P-OPENEAR-LENTO Sample : Open Ear Headphones Trade Mark : ALOVA Main Model : OPENEAR Lento Additional Model : OPENEAR Alto, OPENEAR Mosso, OPENEAR Mezzo Report No. : UNIA23111509ER-61 Prepared for SHENZHEN ALEX TECHNOLOGY CO., LTD. 7th Floor, Building B, Tangxi Zhigu, Xijing Road, Xixiang, Baoan, Shenzhen, China Prepared by Shenzhen United Testing Technology Co., Ltd. D101&D401, No. 107, Kaicheng High-Tech Park, Taoyuan Community, Dalang Sub-District, Longhua District, Shenzhen, Guangdong, China Page 2 of 62 Report No.: UNIA23111509ER-61 TEST RESULT CERTIFICATION Applicant .............................. : SHENZHEN ALEX TECHNOLOGY CO., LTD. Address .................................. : 7th Floor, Building B, Tangxi Zhigu, Xijing Road, Xixiang, Baoan, Shenzhen, China Manufacturer ........................ : SHENZHEN ALEX TECHNOLOGY CO., LTD. Address .................................. : 7th Floor, Building B, Tangxi Zhigu, Xijing Road, Xixiang, Baoan, Shenzhen, China Product description Product .................................. : Open Ear Headphones Trade Mark ............................. : ALOVA Model Name ........................... : OPENEAR Lento, OPENEAR Alto, OPENEAR Mosso, OPENEAR Mezzo 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 United Testing 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, 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 .............: Nov. 16, 2023 ~ Dec. 13, 2023 Date of Issue ..........................................: Dec. 14, 2023 Test Result ..............................................: Pass Prepared by: Jason Ye/Editor Reviewer: Kelly Cheng/Supervisor Approved & Authorized Signer: Liuze/Manager Page 3 of 62 Report No.: UNIA23111509ER-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 11 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 40 5.1 TEST LIMIT 40 5.2 TEST PROCEDURE 40 5.3 TEST RESULT 40 6 20dB BANDWIDTH 45 6.1 TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) 45 6.2 MEASUREMENT EQUIPMENT USED 45 6.3 TEST PROCEDURE 45 6.4 TEST RESULT 45 7 ANTENNA REQUIREMENT 58 8 PHOTO OF TEST 59 Page 4 of 62 Report No.: UNIA23111509ER-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 20dB Bandwidth Pass 5 FCC Part 15.203 Antenna Requirement Pass Page 5 of 62 Report No.: UNIA23111509ER-61 1.2 TEST FACILITY Test Firm : Shenzhen United Testing Technology Co., Ltd. Address : D101&D401, No. 107, Kaicheng High-Tech Park, Taoyuan Community, Dalang Sub-District, Longhua District, Shenzhen, Guangdong, 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: A2LA Certificate Number: 4747.01 The EMC Laboratory has been accredited by A2LA, and in compliance with ISO/IEC 17025:2017 General Requirements for testing Laboratories. FCC Registration Number: 674885 The EMC Laboratory has been registered and fully described in a report filed with the (FCC) Federal Communications commission. IC Registration Number: 31584 The EMC Laboratory has been registered and fully described in a report filed with the (IC) Industry Canada. Page 6 of 62 Report No.: UNIA23111509ER-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 62 Report No.: UNIA23111509ER-61 2 GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT Product: Open Ear Headphones Trade Mark: ALOVA Main Model: OPENEAR Lento Additional Model: OPENEAR Alto, OPENEAR Mosso, OPENEAR Mezzo 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 L…

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Model: OPENEAR Lento Radiated Emission test Left earphone: 30MHz-1000MHz Above 1GHz Model: OPENEAR Lento Right earphone: 30MHz-1000MHz Above 1GHz Model: OPENEAR Lento Conducted Emission test Model: OPENEAR Lento RF Conducted test Left earphone: Right earphone: