OSDAMIRON300True Wireless Earphones

Applicant Declaration QSF27-14-04 Rev 1.1 Jan 17, 2024 Page 1 of 1 Original Issue: Jan. 4, 2021 SGS North America Inc. 620 Old Peachtree Road SUITE 100 Suwanee, Georgia 30024 United States Applicant Legal Business Name Beyerdynamic Address 56 Central Avenue Farmingdale New York 11735 United States FRN 0033742081 Grantee Code OSD FCC ID OSDAMIRON300 Authorized Contact Name Ulrich Roth Contact Email [email protected] Contact Phone 631-293-3200 I, the undersigned, certify that I am an authorized signatory for the Applicant and therefore declare; a) in accordance with 47CFR2.911(d), all of the statements herein and the exhibits attached hereto are true and correct to the best of my knowledge and belief. b) in accepting a Grant of Equipment Authorization issued by a TCB, under the authority of the FCC, as a result of the representations made in this application, the Applicant is responsible for: (1) labeling the equipment with the exact FCC ID as specified in this application, (2) compliance statement labeling pursuant to the applicable rules, (3) compliance of the equipment with the applicable technical rules, c) if the Applicant is not the actual manufacturer of the equipment, appropriate arrangements have been made with the manufacturer to ensure that production units of this equipment will continue to comply with the FCC’s technical requirements. d) in accordance with 47 CFR 2.909 and KDB394321, the Applicant has read, understood and agrees to accept that they are the responsible party and agree to abide by their responsibilities as specified under 47 CFR 2.909 and KDB394321. e) in accordance with ISO 17065, FCC KDB641163, FCC KDB610077, KDB394321 and RSP-100, the Applicant has read, understood, accepts and agrees to abide by the post market surveillance requirements. (1) the Applicant understands, accepts and agrees that a sample may be requested for surveillance testing. (2) the Applicant shall make provisions to always have a production sample available upon request by SGS, FCC and/or ISED. (3) the Applicant shall, upon request by SGS, at the Applicant’s expense, provide a production sample of the requested product to SGS, FCC and/or ISED as instructed. The sample shall include all support devices, cables, software, accessories or other hardware or software required for evaluation, review, certification and audit surveillance of products certified by SGS. f) neither the Applicant nor any party to the application is subject to a denial of Federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. §862 because of a conviction for possession or distribution of a controlled substance. See 47CFR 1.2002(b) for the definition of a “party” for these purposes. g) the Applicant has read, understood, accepts and agrees to abide by the SGS North America, Inc.(TCB) terms and conditions. Link to CFRs: https://www.fcc.gov/wireless/bureau-divisions/techno logies-systems-and-innovation-division/rules-regulations-title-47 Link to KDBs: https://apps.fcc.gov/oetcf/kdb/index.cfm Link to RSP-100: https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf01130.html Link to the Covered List: Covered List [ Beyerdynamic ] (“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. [ Beyerdynamic] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] identified on the Covered list, established pursuant to § 1.50002, as an entity producing “covered” equipment. Applicant Signature: Date: 7/19/24 Print Name: Ulrich Roth Title: Manager Product Compliance *NOTE: This declaration cannot be signed by an Agent, it shall be signed by an authorized person listed in the FCC database

UNITED STATES DESIGNATED AGENT LETTER Date: 2024-07-18 TO: Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 Applicant U.S. Designated Agent Company Name: Beyerdynamic Company Name: Beyerdynamic FRN: 0033742081 FRN: 0033742081 Grantee Code: OSD Contact Name: Ulrich Roth Contact Name Ulrich Roth Address: 56 Central Avenue Farmingdale New York 11735 United States Address: 56 Central Avenue Farmingdale New York 11735 United States City/Province/Zi p: City/Province/Zi p: Telephone: 631-293-3200 Telephone: 631-293-3200 Fax: 631-293-3288 Fax: 631-293-3288 Email: Ulrich.roth@beyerdynamic .de Email: Ulrich.roth@beyerdynamic .de Applicable Equipment: FCC ID: OSDAMIRON300 ATTN: Director of Certification: We, Beyerdynamic understand and acknowledge the applicants consent and the designated agent’s obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and e-mail of the designated agent listed above. We, Beyerdynamic acknowledge the applicant’s acceptance of its 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. Applicant U.S. Designated Agent Name (Printed): Ulrich Roth Name (Printed): Ulrich Roth Title: Director of R&D Title: Manager Product Compliance Signature: Signature:

Beyerdynamic Date: 07/18/2024 TO: Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 Regarding: FCC ID: OSDAMIRON300 To whom it may concern: We, the undersigned, hereby authorize SGS-CSTC Standards Technical Services Co., Ltd. (SGS) to act on our behalf in all manners relating to application for equipment authorization with respect to the FCC ID above, including signing of all documents relating to these matters. Any and all acts carried out by the agent on our behalf shall have the same effect as acts of our own. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). Where our agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for Certification, as specified by SGS North America, Inc., still resides with Beyerdynamic This authorization is valid until further written notice from the applicant. Print Name: Ulrich Roth Title: Manager Product Compliance Signature: On behalf of company: Beyerdynamic Inc. Telephone: 631-293-3200 E-mail: [email protected]

Beyerdynamic D ate: 07/22/2024 TO: Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 F rom: Regarding: Confidentiality Request regarding application for FCC ID: OSDAMIRON300 LONG TERM CONFIDENTIALITY Pursuant to 47 CFR Section 0.459 and 0.457 of the commission’s rules, the applicant hereby requests confidential treatment of the documents listed below, associated with the certification application referenced above. Schematic(s) Block Diagrams Operational Descriptions Tune up procedure The documents above contain proprietary information not released to the public. Public disclosure of this information may prove harmful to the business of the applicant. SHORT TERM CONFIDENTIALITY Additionally, the applicant requests the following documents be held confidential until the device is marketed or 45 days from the grant date, whichever is less. If the device is marketed within 45 days of the Grant Date, the applicant will notify the TCB per FCC KDB 726920 D01 Confidentiality Request Procedures. External Photos Internal Photos Test Setup Photos User manual(s) Beyerdynamic Print Name: Ulrich Roth Title: Manager Product Compliance Signature: On behalf of Company: Beyerdynamic Telephone: 631-293-3200 E-mail: [email protected]

Label placement To Federal Communication Commission Equipment Authorization Branch 7 435 Oakland Mills Road Columbia, MID 21046 For the following product, Model Number: FCC ID: OSDAMIRON300 The FCC ID is not affixed on the product itself, but described in the product user manual and the product package/case due to below reasons. Reasons： The product is too small to put the label on it. The Size is below: 63 mm* 53 mm* 30 mm Print Name: Ulrich Roth Title: Manager Product Compliance Signature: On behalf of Company: Beyerdynamic Telephone: 631-293-3200 E-mail: [email protected]

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01 Rev. A/0 May15,2023 Report No.: SZCR240700261904 Page: 1 of 35 Keny Xu EMC Laboratory Manager SAR TEST REPORT Application No.: SZCR2407002619AT Applicant: Beyerdynamic Address of Applicant: 56 Central Avenue, Farmingdale, New York, 11735 United States Manufacturer: beyerdynamic GmbH & Co. KG Address of Manufacturer: Theresienstraße 8, 74072 Heilbronn, Germany Factory: Guangxi Cannice Precision Technology Co. Ltd. Address of Factory: Block C, South of Longtuan West Road Zhongshan Town, Zhongshan County Hezhou Guangxi 542600 China Product Name: True Wireless Earphones Model No.: AMIRON 300, AMIRON 300-L, AMIRON 300-R   Please refer to section 2 of this report which indicates which model was actually tested and which were electrically identical. Trade mark: Beyerdynamic FCC ID: OSDAMIRON300 Standard(s) : FCC 47CFR §2.1093 Date of Receipt: 2024-07-25 Date of Test: 2024-07-26 to 2024-07-27 Date of Issue: 2024-07-30 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01 Rev. A/0 May15,2023 Report No.: SZCR240700261904 Page: 2 of 35 Revision Record Version Description Date Remark 00 Original 2024-07-30 / Authorized for issue by: Roman Pan/ Project Engineer Eric Fu / Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01 Rev. A/0 May15,2023 Report No.: SZCR240700261904 Page: 3 of 35 TEST SUMMARY Test Summary Frequency Band Max Reported SAR1g(W/kg) Head BT 0.365 SAR Limited(W/kg) 1.6 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01 Rev. A/0 May15,2023 Report No.: SZCR240700261904 Page: 4 of 35 CONTENTS 1 GENERAL INFORMATION......................................................................................................................... 6 1.1 GENERAL DESCRIPTION OF EUT ............................................................................................................ 6 1.2 DUT ANTENNA LOCATIONS .................................................................................................................... 7 1.3 TEST SPECIFICATION............................................................................................................................. 8 1.4 RF EXPOSURE LIMITS ............................................................................................................................ 9 1.5 TEST LOCATION ...................................................................................................................................10 1.6 TEST FACILITY .....................................................................................................................................10 2 LABORATORY ENVIRONMENT ...............................................................................................................11 3 SAR MEASUREMENTS SYSTEM CONFIGURATION ...............................................................................12 3.1 THE SAR MEASUREMENT SYSTEM ........................................................................................................12 3.2 ISOTROPIC E-FIELD PROBE EX3DV4 .....................................................................................................13 3.3 DATA ACQUISITION ELECTRONICS (DAE) ...............................................................................................14 3.4 SAM TWIN PHANTOM ...........................................................................................................................14 3.5 ELI PHANTOM .....................................................................................................................................15 3.6 DEVICE HOLDER FOR TRANSMITTERS.....................................................................................................16 3.7 MEASUREMENT PROCEDURE .................................................................................................................17 3.7.1 Scanning procedure ......................................................................................................................17 3.7.2 Data Storage .................................................................................................................................19 3.7.3 Data Evaluation by SEMCAD ........................................................................................................19 4 SAR MEASUREMENT VARIABILITY AND UNCERTAINTY .....................................................................21 4.1 SAR MEASUREMENT VARIABILITY...........................................................................................................21 4.2 SAR MEASUREMENT UNCERTAINTY ........................................................................................................22 5 DESCRIPTION OF TEST POSITION .........................................................................................................23 5.1 THE TEST POSITION .............................................................................................................................23 6 SAR SYSTEM VERIFICATION PROCEDURE ...........................................................................................24 6.1 TISSUE SIMULATE LIQUID ......................................................................................................................24 6.1.1 Recipes for Tissue Simulate Liquid ................................................................................................24 6.1.2 Test Liquids Confirmation ..............................................................................................................25 6.1.3 Measurement for Tissue Simulate Liquid .......................................................................................26 6.2 SAR SYSTEM CHECK ....................................................................................…

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Confirmation of Sample 样品承认书 第1页/共计10页 司南微电子（深圳）有限公司 SINAWELL Electronics(Shenzhen) Co., Ltd. Customer Name Shenzhen cannice Technology Co., Ltd Product Name A1355-L Customer Item Number Project name A1355-L Product brand Product model Appendix ■ cover ■ buleprint □ FAI report □ CPK report告 ■ Reliability Test Report □ 3D model ■ RoHS □ UN38.3 Supplier Signature Make Audit Approval Chen de Li xiao long Zhang ping Customer Signature Make Audit Approval Admit condition □ admit □ Denial of recognition □ Conditional recognition Conditions to be satisfied： □ Provisional recognition limit PCS Supplier Information： Name ：SINAWELL Electronics(Shenzhen) Co., Ltd. Contacts ：Zhang wen feng ADD ： 708-718, Jinfulai Building, 49-1 Dabao Road, Xin'an 28 District, Bao'an District, Shenzhen TLE ：0755-29988460 Fax ：0755-29988470 EMAIL：[email protected] Rev：B Confirmation of Sample 样品承认书 第2页/共计10页 The Main Antenna Sample Confirmation Designer：SINAWELL Electronics(Shenzhen) Co., Ltd. Add：712-717, Block A Jinfulai Building,49-1 Dabao Road,Xinan 28 th area,Baoan District,Shenzhen,China Customer Shenzhen CANNICE Technology Co., Ltd. Project Name A1355-L Date 2024-07-23 Project NO. Notes FPC Frequency Range BT Designed By RF Engineer Structural Engineer Checked By Engineering Manager Client’s Approval Confirmation of Sample 样品承认书 第3页/共计10页 Table of Contents 1.Specification description ............................................ 1、2 1.Summary of specifications ............................................... 3 2.Appearance ............................................................. 3 3.Electrical performance .................................................. 3 3.1. Antenna band ...................................................... 3 3.2. Matching circuit .................................................. 3 3.3.Return Loss........................................................ 3 3.4.Antenna Gain ....................................................... 5 4. Appearance structure ................................................... 5 4.1. Antenna Material .................................................. 5 5. Remarks ............................................................... 5 Appendix I (Mechanical drawing) ........................................... 6 Appendix II (Performance Report) ...................................... 7-10 Confirmation of Sample 样品承认书 第4页/共计10页 1. Specification description This specification describes the status of the A1355-L internal antenna with a frequency band of 2400mHz-2500mHz. 2. Antenna appearance 3. Electrical performance 3.1. Antenna band BT Transmitting band(MHz) 2400MHz-2500MHz 3.2. Matching Circuit After the test point is at the antenna connector (RF test port), see the figure below. 1. BT antenna matching. 3.3. Return Loss BT VSWR+ Return Resonant Point Range(MHz) Frequency point(MHz)/Maximum Echo Loss(dB) 2400-2500 2400 2500 VSWR 1.46 1.52 Return loss -14.6 -13.7 Element Value E1(0402) NC E2(0402) 0Ω E3(0402) NC E4(0402) 0Ω Confirmation of Sample 样品承认书 第5页/共计10页 3.4. Antenna Gain Freq Effi Effi Gain (MHz) (%) (dB) (dBi) 2400 15.15 -8.2 -1.19 2410 18.49 -7.33 -0.43 2420 19.9 -7.01 -0.24 2430 22.03 -6.57 0.14 2440 24.29 -6.15 0.54 2450 25.78 -5.89 0.78 2460 26.98 -5.69 0.95 2470 26.23 -5.81 0.89 2480 26.97 -5.69 0.99 2490 25.56 -5.92 0.81 2500 25.11 -6 0.92 4. Appearance structure 4.1. Antenna Material 5. Notes (Electrical Performance Test Report) In the electrical performance test report, the 3D darkroom data for manufacturers are provided. The following table format Appendix 1:（Mechanical drawing） Appendix II (Performance report) Confirmation of Sample 样品承认书 第6页/共计10页 FPC Mechanical drawing(Annex I) Focus on size NO Size(mm) Tolerance(mm) Notes 1 22.96 ±0.2 2 12.51 ±0.2 3 4 5 6 Confirmation of Sample 样品承认书 第7页/共计10页 3DTest Report (FS) BT Channel 3DCoupling Test Field strength map TRP 0 1.78 TIS 0 -84.54 TRP 39 1.79 Confirmation of Sample 样品承认书 第8页/共计10页 TIS 39 -84.39 TRP 78 0.39 TIS 78 -83.8 Confirmation of Sample 样品承认书 第9页/共计10页 3DTest Report (BH) BT Channel 3DCoupling Test Field strength map TRP 0 -0.56 TIS 0 -81.82 TRP 39 -1.2 Confirmation of Sample 样品承认书 第10页/共计10页 TIS 39 -81.03 TRP 78 -1.72 TIS 78 -82.95

Confirmation of Sample 样品承认书 第1页/共计10页 司南微电子（深圳）有限公司 SINAWELL Electronics(Shenzhen) Co., Ltd. Customer Name Shenzhen cannice Technology Co., Ltd Product Name A1355-R Customer Item Number Project name A1355-R Product brand Product model Appendix ■ cover ■ buleprint □ FAI report □ CPK report告 ■ Reliability Test Report □ 3D model ■ RoHS □ UN38.3 Supplier Signature Make Audit Approval Chen de Li xiao long Zhang ping Customer Signature Make Audit Approval Admit condition □ admit □ Denial of recognition □ Conditional recognition Conditions to be satisfied： □ Provisional recognition limit PCS Supplier Information： Name ：SINAWELL Electronics(Shenzhen) Co., Ltd. Contacts ：Zhang wen feng ADD ： 708-718, Jinfulai Building, 49-1 Dabao Road, Xin'an 28 District, Bao'an District, Shenzhen TLE ：0755-29988460 Fax ：0755-29988470 EMAIL：[email protected] Rev：B Confirmation of Sample 样品承认书 第2页/共计10页 The Main Antenna Sample Confirmation Designer：SINAWELL Electronics(Shenzhen) Co., Ltd. Add：712-717, Block A Jinfulai Building,49-1 Dabao Road,Xinan 28 th area,Baoan District,Shenzhen,China Customer Shenzhen CANNICE Technology Co., Ltd. Project Name A1355-R Date 2024-07-23 Project NO. Notes FPC Frequency Range BT Designed By RF Engineer Structural Engineer Checked By Engineering Manager Client’s Approval Confirmation of Sample 样品承认书 第3页/共计10页 Table of Contents 1.Specification description ............................................ 1、2 1.Summary of specifications ............................................... 3 2.Appearance ............................................................. 3 3.Electrical performance .................................................. 3 3.1. Antenna band ...................................................... 3 3.2. Matching circuit .................................................. 3 3.3.Return Loss........................................................ 3 3.4.Antenna Gain ....................................................... 5 4. Appearance structure ................................................... 5 4.1. Antenna Material .................................................. 5 5. Remarks ............................................................... 5 Appendix I (Mechanical drawing) ........................................... 6 Appendix II (Performance Report) ...................................... 7-10 Confirmation of Sample 样品承认书 第4页/共计10页 1. Specification description This specification describes the status of the A1355-R internal antenna with a frequency band of 2400mHz-2500mHz. 2. Antenna appearance 3. Electrical performance 3.1. Antenna band BT Transmitting band(MHz) 2400MHz-2500MHz 3.2. Matching Circuit After the test point is at the antenna connector (RF test port), see the figure below. 1. BT antenna matching. 3.3. Return Loss BT VSWR+ Return Resonant Point Range(MHz) Frequency point(MHz)/Maximum Echo Loss(dB) 2400-2500 2400 2500 VSWR 1.28 1.38 Return loss -18.2 -15.9 Element Value E1(0402) NC E2(0402) 0Ω E3(0402) NC E4(0402) 0Ω Confirmation of Sample 样品承认书 第5页/共计10页 3.4. Antenna Gain Freq Effi Effi Gain (MHz) (%) (dB) (dBi) 2400 14.47 -8.4 -2.37 2410 17.23 -7.64 -1.8 2420 19.25 -7.16 -1.46 2430 22.54 -6.47 -0.79 2440 23.95 -6.21 -0.41 2450 23.3 -6.33 -0.32 2460 24.92 -6.03 0.22 2470 24.04 -6.19 0.38 2480 23.68 -6.26 0.51 2490 22.86 -6.41 0.48 2500 21.67 -6.64 0.41 4. Appearance structure 4.1. Antenna Material 5. Notes (Electrical Performance Test Report) In the electrical performance test report, the 3D darkroom data for manufacturers are provided. The following table format Appendix 1:（Mechanical drawing） Appendix II (Performance report) Confirmation of Sample 样品承认书 第6页/共计10页 FPC Mechanical drawing(Annex I) Focus on size NO Size （mm） Tolerance(mm) Notes 1 22.96 ±0.2 2 12.51 ±0.2 3 4 5 6 Confirmation of Sample 样品承认书 第7页/共计10页 3D Test Report (FS) BT Channel 3DCoupling Test Field strength map TRP 0 1.09 TIS 0 -87.37 TRP 39 1.45 Confirmation of Sample 样品承认书 第8页/共计10页 TIS 39 -86.5 TRP 78 0.35 TIS 78 -85.77 Confirmation of Sample 样品承认书 第9页/共计10页 3D Test Report (BH) BT Channel 3DCoupling Test Field strength map TRP 0 -0.78 TIS 0 -83.88 TRP 39 -1.03 Confirmation of Sample 样品承认书 第10页/共计10页 TIS 39 -84.92 TRP 78 -1.57 TIS 78 -84.69

Report No.: SZCR240700261904 Appendix A Detailed System Check Results 1. System Performance Check System Performance Check 2450 MHz Head Date: 2024-07-26 System Performance Check 2450 MHz Head D2450V2-SN 733 Communication System: D2450; Frequency: 2450.000 Medium: Head Simulating Liquid. Medium parameters used: f= 2450.000 MHz; σ= 1.87 S/m; ε r = 38.1 DASY8 Configuration: - Probe: EX3DV4 - SN7838; ConvF(7.4, 7.32, 7.42); Calibrated: 2023-09-11 - Sensor-Surface: 1.4 mm - Electronics: DAE4ip Sn1830; Calibrated: 2023-09-12 - Phantom: Twin-SAM V8.0 (30deg probe tilt); Serial: 2156 - Measurement Software: cDASY8 V16.2.4.2524 Area Scan (80.0 mm x 105.0 mm): Measurement Grid: 15.0 mm x 15.0 mm SAR (1g) = 13.6 W/kg; SAR (10g) = 6.27 W/kg; Zoom Scan (32.0 mm x 32.0 mm x 30.0 mm): Measurement Grid: 8.0 mm x 8.0 mm x 5.0 mm Power Drift = 0.01 dB SAR (1g) = 13.6 W/kg; SAR (10g) = 6.43 W/kg;

Report No.: SZCR240700261904 Appendix B Detailed Test Results BT for Head Date: 2024-07-26 AMIRON Bluetooth DH5 0CH Right Left side 0mm Device Communication System: ISM 2.4 GHz Band; Frequency: 2402.000 Medium: Head Simulating Liquid. Medium parameters used: f= 2402.000 MHz; σ= 1.82 S/m; ε r = 38.3 DASY8 Configuration: - Probe: EX3DV4 - SN7838; ConvF(7.4, 7.32, 7.42); Calibrated: 2023-09-11 - Sensor-Surface: 1.4 mm - Electronics: DAE4ip Sn1830; Calibrated: 2023-09-12 - Phantom: Twin-SAM V8.0 (30deg probe tilt); Serial: 2156 - Measurement Software: cDASY8 V16.2.4.2524 Area Scan (60.0 mm x 60.0 mm): Measurement Grid: 12.0 mm x 12.0 mm SAR (1g) = 0.165 W/kg; SAR (10g) = 0.078 W/kg; Zoom Scan (30.0 mm x 30.0 mm x 30.0 mm): Measurement Grid: 5.0 mm x 5.0 mm x 5.0 mm Power Drift = 0.10 dB SAR (1g) = 0.215 W/kg; SAR (10g) = 0.081 W/kg;

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR240700261903 Page: 1 of 118 Keny Xu EMC Laboratory Manager TEST REPORT Application No.: SZCR2407002619AT Applicant: Beyerdynamic Address of Applicant: 56 Central Avenue, Farmingdale, New York, 11735 United States Manufacturer: beyerdynamic GmbH & Co. KG Address of Manufacturer: Theresienstraße 8, 74072 Heilbronn, Germany Factory: Guangxi Cannice Precision Technology Co. Ltd. Address of Factory: Block C, South of Longtuan West Road Zhongshan Town, Zhongshan County Hezhou Guangxi 542600 China Equipment Under Test (EUT): EUT Name: True Wireless Earphones Model No.: AMIRON 300, AMIRON 300-L, AMIRON 300-R   Please refer to section 2 of this report which indicates which model was actually tested and which were electrically identical. Trade Mark: Beyerdynamic FCC ID: OSDAMIRON300 Standard(s) : 47 CFR Part 15, Subpart C 15.247 Date of Receipt: 2024-07-05 Date of Test: 2024-07-10 to 2024-07-17 Date of Issue: 2024-07-22 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR240700261903 Page: 2 of 118 Revision Record Version Chapter Date Modifier Remark 01 2024-07-22 Original Authorized for issue by: Bill Chen/Project Engineer Eric Fu/Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR240700261903 Page: 3 of 118 2 Test Summary Radio Spectrum Technical Requirement Item Standard Method Requirement Result Antenna Requirement 47 CFR Part 15, Subpart C 15.247 N/A 47 CFR Part 15, Subpart C 15.203 & 15.247(b)(4) Pass Radio Spectrum Matter Part Item Standard Method Requirement Result Radiated Emissions which fall in the restricted bands 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 6.10.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Below 1GHz ANSI C63.10 (2013) Section 6.4,6.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Above 1GHz ANSI C63.10 (2013) Section 6.6 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Conducted Peak Output Power ANSI C63.10 (2013) Section 11.9.1 47 CFR Part 15, Subpart C 15.247(b)(3) Pass Minimum 6dB Bandwidth ANSI C63.10 (2013) Section 11.8.1 47 CFR Part 15, Subpart C 15.247a(2) Pass Power Spectrum Density ANSI C63.10 (2013) Section 11.10.2 47 CFR Part 15, Subpart C 15.247(e) Pass Conducted Band Edges Measurement ANSI C63.10 (2013) Section 11.13.3.2 47 CFR Part 15, Subpart C 15.247(d) Pass Conducted Spurious Emissions ANSI C63.10 (2013) Section 11.11 47 CFR Part 15, Subpart C 15.247(d) Pass Remark: Model No.: AMIRON 300, AMIRON 300-L, AMIRON 300-R Only the model AMIRON 300 was tested, since according to the declaration from the applicant, the electrical circuit design, PCB layout, components used and internal wiring and functions were identical for the above models, with only difference on AMIRON 300-L is Left earbud, AMIRON 300-R is right earbud. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR240700261903 Page: 4 of 118 3 Contents Page 1 Cover Page ......................................................................................................................................... 1 2 Test Summary ..................................................................................................................................... 3 3 Contents ............................................................................................................................................. 4 4 General Information............................................................................................................................ 6 4.1 Details of E.U.T. ........................................................................................................................... 6 4.2 Description of Support Units ......................................................................................................... 6 4.3 Measurement Uncertainty ............................................................................................................ 6 4.4 Test Location ............................................................................................................................... 8 4.5 Test Facility .................................................................................................................................. 8 4.6 Deviation from Standards ............................................................................................................. 8 4.7 Abnormalities from Standard Conditions ....................................................................................... 8 5 Equipment List ................................................................................................................................... 9 6 Radio Spectrum Technical Requirement ..........................................................................................11 6.1 Antenna Requirement ....................................................…

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