2AMRE-ACOUSYZBluetooth earphone

Acousy Z020 FCC Statement 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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. RF Exposure Information The device has been evaluated to meet general RF exposure requirement. This equipment should be installed and operated with minimum distance 0mm between the radiator & your body. ISED Statement English:This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device. The digital apparatus complies with Canadian CAN ICES-3 (B)/NMB-3(B). French: Cet appareil contient des émetteurs/récepteurs exempts de licence qui sont conformes aux RSS exemptés de licence d'Innovation, Sciences et Développement économique Canada. L'exploitation est soumise aux deux conditions suivantes : (1) Cet appareil ne doit pas provoquer d'interférences. (2) Cet appareil doit accepter toute interférence, y compris les interférences susceptibles de provoquer un fonctionnement indésirable de l'appareil. l'appareil numérique du ciem conforme canadien peut - 3 (b) / nmb - 3 (b). This device meets the exemption from the routine evaluation limits in section 2.5 of RSS 102 and compliance with RSS 102 RF exposure, users can obtain Canadian information on RF exposure and compliance. cet appareil est conforme à l'exemption des limites d'évaluation courante dans la section 2.5 du cnr - 102 et conformité avec rss 102 de l'exposition aux rf, les utilisateurs peuvent obtenir des données canadiennes sur l'exposition aux champs rf et la conformité. This equipment complies with Canada radiation exposure limits set forth for an uncontrolled environment. Cet équipement est conforme aux limites d'exposition aux rayonnements du Canada établies pour un environnement non contrôlé. RF Exposure Statement The device has been evaluated to meet general RF exposure requirement. This equipment should be installed and operated with minimum distance 0mm between the radiator & your body. L'appareil a été évalué pour répondre aux exigences générales d'exposition aux RF. Cet équipement doit être installé et utilisé avec une distance minimale de 0 mm entre le radiateur et votre corps.

Acousy Z021 FCC Statement 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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. RF Exposure Information The device has been evaluated to meet general RF exposure requirement. This equipment should be installed and operated with minimum distance 0mm between the radiator & your body. ISED Statement English:This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device. The digital apparatus complies with Canadian CAN ICES-3 (B)/NMB-3(B). French: Cet appareil contient des émetteurs/récepteurs exempts de licence qui sont conformes aux RSS exemptés de licence d'Innovation, Sciences et Développement économique Canada. L'exploitation est soumise aux deux conditions suivantes : (1) Cet appareil ne doit pas provoquer d'interférences. (2) Cet appareil doit accepter toute interférence, y compris les interférences susceptibles de provoquer un fonctionnement indésirable de l'appareil. l'appareil numérique du ciem conforme canadien peut - 3 (b) / nmb - 3 (b). This device meets the exemption from the routine evaluation limits in section 2.5 of RSS 102 and compliance with RSS 102 RF exposure, users can obtain Canadian information on RF exposure and compliance. cet appareil est conforme à l'exemption des limites d'évaluation courante dans la section 2.5 du cnr - 102 et conformité avec rss 102 de l'exposition aux rf, les utilisateurs peuvent obtenir des données canadiennes sur l'exposition aux champs rf et la conformité. This equipment complies with Canada radiation exposure limits set forth for an uncontrolled environment. Cet équipement est conforme aux limites d'exposition aux rayonnements du Canada établies pour un environnement non contrôlé. RF Exposure Statement The device has been evaluated to meet general RF exposure requirement. This equipment should be installed and operated with minimum distance 0mm between the radiator & your body. L'appareil a été évalué pour répondre aux exigences générales d'exposition aux RF. Cet équipement doit être installé et utilisé avec une distance minimale de 0 mm entre le radiateur et votre corps.

Acousy Z022 FCC Statement 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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. RF Exposure Information The device has been evaluated to meet general RF exposure requirement. This equipment should be installed and operated with minimum distance 0mm between the radiator & your body. ISED Statement English:This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device. The digital apparatus complies with Canadian CAN ICES-3 (B)/NMB-3(B). French: Cet appareil contient des émetteurs/récepteurs exempts de licence qui sont conformes aux RSS exemptés de licence d'Innovation, Sciences et Développement économique Canada. L'exploitation est soumise aux deux conditions suivantes : (1) Cet appareil ne doit pas provoquer d'interférences. (2) Cet appareil doit accepter toute interférence, y compris les interférences susceptibles de provoquer un fonctionnement indésirable de l'appareil. l'appareil numérique du ciem conforme canadien peut - 3 (b) / nmb - 3 (b). This device meets the exemption from the routine evaluation limits in section 2.5 of RSS 102 and compliance with RSS 102 RF exposure, users can obtain Canadian information on RF exposure and compliance. cet appareil est conforme à l'exemption des limites d'évaluation courante dans la section 2.5 du cnr - 102 et conformité avec rss 102 de l'exposition aux rf, les utilisateurs peuvent obtenir des données canadiennes sur l'exposition aux champs rf et la conformité. This equipment complies with Canada radiation exposure limits set forth for an uncontrolled environment. Cet équipement est conforme aux limites d'exposition aux rayonnements du Canada établies pour un environnement non contrôlé. RF Exposure Statement The device has been evaluated to meet general RF exposure requirement. This equipment should be installed and operated with minimum distance 0mm between the radiator & your body. L'appareil a été évalué pour répondre aux exigences générales d'exposition aux RF. Cet équipement doit être installé et utilisé avec une distance minimale de 0 mm entre le radiateur et votre corps.

COTRON CORPORATION Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2024-03-15 FCC ID: 2AMRE-ACOUSYZ Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing COTRON CORPORATION 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. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing COTRON CORPORATION 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. Applicant: COTRON CORPORATION Address: 12Fl., 150, Sec.4, Cheng-de Rd. Shilin District, Taipei City, Taiwan ROC 111 Contact Person: Johnny Chen Tel.: +886-2-28822238-8203 Email: [email protected] Sincerely, Signature:

Attestation Statements 2024-03-15 TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID:2AMRE-ACOUSYZ) COTRON CORPORATION, the undersigned, hereby authorize HOPEK CORPORATION INC to act as our designated U.S. agent for service of process, COTRON CORPORATION 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 the equipment. HOPEK CORPORATION INC accepts the responsibility to act as designated U.S. agent for service of process. Applicant Information： Company name: COTRON CORPORATION Contact Name: Johnny Chen Address: 12Fl., 150, Sec.4, Cheng-de Rd. Shilin District, Taipei City, Taiwan ROC 111 Telephone No: +886-2-28822238-8203 Email: [email protected] FRN: 0026655340 Signature: Johnny Chen U.S. Agent Information: Company Name:HOPEK CORPORATION INC Address:4358 S BANNOCK ST ENGLEWOOD, CO 80110 United States FRN: 0034562900 Contact Name:Peter Davis Telephone No: 561-235-6113 Email: [email protected] Signature: Peter Davis

承 認 書 SPECIFICATION FOR APPROVAL 客戶名稱 CUSTOMER ： 客戶料號 CUSTOMER’S P/N ： 料號 PART NUMBER ： WAN3216F245W36 規格 DESCRIPTION ： Chip Antenna 3216 M-Ant 2.45G Type 36 版本 VERSION ： V2.4 日期 ISSUE DATE ： 2020/02/04 客 戶 承 認 CUSTOMER APPROVED 工 程 部 R&D CENTER 承 認 APPROVAL 確 認 CHECKED 製 作 DRAWN Ray Tennyson Snow 萬誠科技股份有限公司 OneWave Electronic Co., Ltd. 112台北市北投區立功街151號1樓 1F, No. 151, Li Gong Street, Beitou District, Taipei City 112, Taiwan 電話: (02) 2898-2220 TEL: +886 2 2898-2220 傳真: (02) 2898-5055 FAX: +886 2 2898-5055 ONEWAVE TECHNOLOGY CO., LTD. 2/11 3216 Chip antenna For Bluetooth / WLAN Applications Dimension (mm) L 3.23 ± 0.20 W 1.66 ± 0.20 T 1.23 ± 0.20 P/N: WAN3216F245W36 ONEWAVE TECHNOLOGY CO., LTD. 3/11 Part Number Information WAN 3216 F 245 W 36 A B C D E F A Product Series Antenna B Dimension L x W 3.2X1.6mm (+-0.2mm) C Material High K material D Working Frequency 2.4 ~ 2.5GHz E Feeding mode Monopole & Single Feeding F Antenna type Type = 36 1. Electrical Specification Remark : Bandwidth & Peak Gain was measured under evaluation board of next page Specification Part Number WAN3216F245W36 Central Frequency 2450 MHz Bandwidth 100 (Min.) MHz Return Loss -6.5 (Max) dB Peak Gain 2.71 dBi Impedance 50 Ohm Operating Temperature -40～+110 °C Maximum Power 4 W Resistance to Soldering Heats 10 ( @ 260°C) sec. Polarization Linear Azimuth Beamwidth Omni-directional Termination Cu / Sn (Leadless) ONEWAVE TECHNOLOGY CO., LTD. 4/11 2. Recommended PCB Pattern 1.Evaluation Board Dimension 2.Evaluation Board Dimension Unit : mm Suggested Matching Circuit ONEWAVE TECHNOLOGY CO., LTD. 5/11 1.Layout Dimensions in Clearance area(Size=5.2*5.0mm) 50 ohm transmission Line Matching Circuit 2.Layout Dimensions in Clearance area(Size=8.2*5.0mm) 50 ohm transmission Line Matching Circuit FootPrint (Unit : mm) ONEWAVE TECHNOLOGY CO., LTD. 6/11 3. Measurement Results Return Loss ONEWAVE TECHNOLOGY CO., LTD. 7/11 Radiation Pattern Efficiency Peak Gain Directivity 2400MHz 55.21 % 1.45 dBi 5.32 dBi 2450MHz 66.45 % 2.71 dBi 5.21 dBi 2500MHz 57.53 % 1.98 dBi 5.29 dBi Chamber Coordinate System Y Z X ONEWAVE TECHNOLOGY CO., LTD. 8/11 4.Reliability and Test Condictions ITEM REQUIREMENTS TEST CONDITION Solderability 1. Wetting shall exceed 90% coverage 2. No visible mechanical damage Pre-heating temperature:150°C/60sec. Solder temperature:230±5°C Duration:4±1sec. Solder:Sn-Ag3.0-Cu0.5 Flux for lead free: rosin Solder heat Resistance 1. No visible mechanical damage 2. Central Freq. change :within ± 6% 10±0.5 sec. 60sec .. TEMP (°C) 150°C 260°C Pre-heating temperature:150°C/60sec. Solder temperature:260±5°C Duration:10±0.5sec. Solder:Sn-Ag3.0-Cu0.5 Flux for lead free: rosin Component Adhesion (Push test) 1. No visible mechanical damage The device should be reflow soldered(230±5°C for 10sec.) to a tinned copper substrate A dynometer force gauge should be applied the side of the component. The device must with-ST-F 0.5 Kg without failure of the termination attached to component. Component Adhesion (Pull test) 1. No visible mechanical damage Insert 10cm wire into the remaining open eye bend ,the ends of even wire lengths upward and wind together. Terminal shall not be remarkably damaged. Thermal shock 1. No visible mechanical damage 2. Central Freq. change :within ±6% Phase Temperature(°C) Time(min) 1 +110±5°C 30±3 2 Room Temperature Within 3sec 3 -40±2°C 30±3 4 Room Temperature Within 3sec +110°C=>30±3min -40°C=>30±3min Test cycle:10 cycles The chip shall be stabilized at normal condition for 2~3 hours before measuring. Resistance to High Temperature 1. No visible mechanical damage 2. Central Freq. change :within ±6% 3. No disconnection or short circuit. Temperature: +110±5°C Duration: 1000±12hrs The chip shall be stabilized at normal condition for 2~3 hours before measuring. Resistance to Low Temperature 1. No visible mechanical damage 2. Central Freq. change :within ±6% 3. No disconnection or short circuit. Temperature:-40±5°C Duration: 1000±12hrs The chip shall be stabilized at normal condition for 2~3 hours before measuring. Humidity 1. No visible mechanical damage 2. Central Freq. change :within ±6% 3. No disconnection or short circuit. Temperature: 40±2°C Humidity: 90% to 95% RH Duration: 1000±12hrs The chip shall be stabilized at normal condition for 2~3 hours before measuring. 4±1 sec. 60sec TEMP (°C) 150°C 230°C ONEWAVE TECHNOLOGY CO., LTD. 9/11 5.Soldering and Mounting Mildly activated rosin fluxes are preferred. The minimum amount of solder can lead to damage from the stresses caused by the difference in coefficients of expansion between solder, chip and substrate. The terminations are suitable for all wave and re-flow soldering systems. If hand soldering cannot be avoided, the preferred technique is the utilization of hot air soldering tools. Recommended temperature profiles for re-flow soldering in Figure 1. Products attachment with a soldering iron is discouraged due to the inherent process control limitations. In the event that a soldering iron must be employed the following precautions are recommended. ‧Preheat circuit and products to 150°C ‧Never contact the ceramic with the iron tip ‧Use a 20 watt soldering iron with tip diameter of 1.0mm ‧280°C tip temperature (max) ‧1.0mm tip diameter (max) ‧Limit soldering time to 3 sec. SOLDERING COOLING NATURAL PRE-HEATING TEMPERATURE(°C) 60~120 s 10s max. 30~60s 250~260 230 180 150 TIME(sec.) Reflow Soldering SOLDERING COOLING NATURAL PRE-HEATING TEMPERATURE(°C) within 3s Gradualcooling 150 TIME(sec.) Iron Soldering Over 60s 350 300 ONEWAVE TECHNOLOGY CO., LTD. 10/11 6.Packaging Information ◆ Tape Specification: W Ao Bo Ko P F E D D1 Po P2 t 8.0 ±0.30 1.80 ±0.05 3.51 ±0.10 1.59 ±0.10 4.00 ±0.05 3.50 ±0.05 1.75 ±0.10 1.50 ±0.10 0.00 ±0.10 4.00 ±0.10 2.00 ±0.05 0.25 ±0.05 ◆ Reel Specification: (7’’, Φ180 mm) Tape Width(mm) A(mm) B(mm) C(mm) D(mm) Chip/Reel(pcs) 8 9.0±0.5 60±2 13.5±0.5 178±2 3000 ONEWAVE TECHNOLOGY CO., LTD. 11/11 7.Storage and Transportation Information Storage Con…

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COTRON CORPORATION Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: March 28, 2024 Subject; Request for Confidentiality FCC ID: 2AMRE-ACOUSYZ 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 In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. 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: Johnny Chen Title: Sales Manager

Effective Date: April 2, 2020 QSF 7.6.4-8 – Agent Authorization Letter Template Page 1 of 1 Revision Date: Revision: 0 COTRON CORPORATION Date：2024-03-15 Product Model Number: Acousy Z020 ; Acousy Z021, Acousy Z022 FCC ID：2AMRE-ACOUSYZ To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following: • Testing • Approval applications and procedures We declare that ORGANIZATION. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by ORGANIZATION. on our behalf shall have the same effect as acts of our own. Signature: By: Johnny Chen Contact Listed on FCC Wesbite Title: Sales Manager Email: [email protected] On behalf of: COTRON CORPORATION

COTRON CORPORATION Declaration Letter of Model Difference Date: 2024-03-15 Tested Model Number: Acousy Z020 Adding Model Number(s): Acousy Z021, Acousy Z022 All Adding Model Number(s) is/are same electrically identical as Tested Model Number. Only model name and the appearance of headphones different for market purpose. Yours Sincerely, Applicant: COTRON CORPORATION Address: 12Fl., 150, Sec.4, Cheng-de Rd. Shilin District, Taipei City, Taiwan ROC 111 Contact Person: Johnny Chen Tel.: +886-2-28822238-8203 Email: [email protected] Sincerely, Signature:

Page 1 of 14 Report No.: LGT24B021 Appendix - External Photographs of EUT Constructional Details Model: Acousy Z020 Photo 1 Photo 2 Page 2 of 14 Report No.: LGT24B021 Photo 3 Photo 4 Page 3 of 14 Report No.: LGT24B021 Photo 5 Photo 6 Page 4 of 14 Report No.: LGT24B021 Photo 7 Photo 8 Page 5 of 14 Report No.: LGT24B021 Photo 9 Photo 10 Page 6 of 14 Report No.: LGT24B021 Model: Acousy Z021 Photo 11 Photo 12 Page 7 of 14 Report No.: LGT24B021 Photo 13 Photo 14 Page 8 of 14 Report No.: LGT24B021 Photo 15 Photo 16 Page 9 of 14 Report No.: LGT24B021 Photo 17 Photo 18 Page 10 of 14 Report No.: LGT24B021 Photo 19 Page 11 of 14 Report No.: LGT24B021 Model: Acousy Z022 Photo 20 Photo 21 Photo 22 Page 12 of 14 Report No.: LGT24B021 Photo 23 Page 13 of 14 Report No.: LGT24B021 Photo 24 Photo 25 Page 14 of 14 Report No.: LGT24B021 Photo 26 Photo 27

Label Bluetooth earphone Model: Acousy Z020 FCC ID: 2AMRE-ACOUSYZ IC: 32179-ACOUSYZ 30mm Black font on a white label 15mm

Label Bluetooth earphone Model: Acousy Z022 FCC ID: 2AMRE-ACOUSYZ IC: 32179-ACOUSYZ 30mm Black font on a white label 15mm

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China RF TEST REPORT Product Name: Bluetooth earphone Model Name: Acousy Z020, Acousy Z021, Acousy Z022 FCC ID: 2AMRE-ACOUSYZ Issued For : AcoustMax International Corporation Room 501,Lingyun Building ,HongLang North 2 Road, ShenZhen, China Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT24B021HA01 Sample Received Date: Feb. 26, 2024 Date of Test: Feb. 26, 2024 – Mar. 15, 2024 Date of Issue: Mar. 15, 2024 Report No.: LGT24B021HA01 Page 2 of 7 TEST REPORT CERTIFICATION Applicant: AcoustMax International Corporation Address: Room 501,Lingyun Building ,HongLang North 2 Road, ShenZhen, China Manufacture: NINGBO TONWEL AUDIO EQUIPMENTS CO.,LTD Address: NO.28 XIYI ROAD JIANGSHAN TOWN YINZHOU NINGBO,CHINA Factory : NINGBO TONWEL AUDIO EQUIPMENTS CO.,LTD Address: NO.28 XIYI ROAD JIANGSHAN TOWN YINZHOU NINGBO,CHINA Product Name: Bluetooth earphone Trademark: CO CO ACOUSY Model Name: Acousy Z020, CMC1112, CMAcousy Z020, MAcousy Z020, HIFI100 Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC 47 CFR §2.1093 KDB 447498 D01 General RF Exposure Guidance v06 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT24B021HA01 Page 3 of 7 TABLE OF CONTENTS 1 . GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST LABORATORY 5 2 . FCC 47CFR §2.1091 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 EUT OPERATION CONDITION 6 2.4 CLASSIFICATION 6 2.5 TEST RESULT 7 Report No.: LGT24B021HA01 Page 4 of 7 Revision History Rev. Issue Date Revisions 00 Mar. 15, 2024 Initial Issue Report No.: LGT24B021HA01 Page 5 of 7 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name: Bluetooth earphone Trademark: CO CO ACOUSY Model Name: Acousy Z020 Series Model: Acousy Z021, Acousy Z022 Model Difference: Only model name and the appearance of headphones different. Frequency Bands: Bluetooth 2402 – 2480 MHz Adapter: N/A Battery: Battery inside: 3.7V, 100mAh Hardware Version: N/A Software Version: N/A 1.2 TEST LABORATORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate A2LA Certificate No.: 6727.01 FCC Registration No.: 746540 CAB ID: CN0136 Report No.: LGT24B021HA01 Page 6 of 7 2. FCC 47CFR §2.1091 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environmental impact of the human exposure to radio-frequency (RF) radiation as specified in 1.1307 (b) Limits for Maximum Permissible Exposure (MPE) Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm²) Limits for Occupational / controlled Exposures 300 - 1500 -- -- F/300 1500 – 100000 -- -- 5.0 Limits for General population / Uncontrolled Exposure 300 - 1500 -- -- F/1500 1500 – 100000 -- -- 1.0 F= Frequency in MHz Friss Formula Friss Transmission Formula: Pd = (Pout * G) / (4*pi*r²) Where Pd = power density in mW/cm² Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = Distance between observation point and the center of radiator in cm If we know the maximum gain of the antenna and the total output power to the antenna, through calculation, we will know MPE value at distance 20cm. 2.3 EUT OPERATION CONDITION EUT was enabled to transmit and receive at lowest, middle and highest channels. 2.4 CLASSIFICATION The antenna of this product, under normal use condition, is at least 20cm away from the body of the user. Warning statement to the user for keeping at least 20cm or more separation distance from the antenna should be included in the User manual. So, this device is classified as Mobile device. Report No.: LGT24B021HA01 Page 7 of 7 2.5 TEST RESULT Turn up Result Mode Turn up Power BT-GFSK 3±1dBm BT-π/4-DQPSK 3±1dBm BT-8DPSK 3±1dBm GFSK(1Mbps)2.4022.254 2.511886430.7786 3 π/4- DQPSK(2Mbps) 2.4022.034 2.511886430.7786 3 8DPSK(3Mbps)2.4022.474 2.511886430.7786 3 Mode Limit Maximum Peak Conducted Output Power (dBm) frequency (GHz) Tune up Power (dBm) Tune up Power (mW) Result Remark: Threshold at which no SAR required is 0.7786≤ 3.0 for 1-g SAR, Separation distance is 5mm. ※※※※※END OF THE REPORT※※※※※

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China R…

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