2A2KDZXHP001Headphones

Rev 1/26/2023 (Avedis Zildjian Co.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 03-06-2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2A2KDZXHP001 [Avedis Zildjian Co.] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, (Madlyn Pettie)

Lab: Hwa-Hsing (Dongguan) Testing Co., Ltd. Address: No.101, Building N1, Yuyuan 2 Road, Yuyuan Industrial Park, HuangJiang Town, Dongguan City, People’s Republic of China Te l : 0769-83078199 Web.: www.hwa-hsing.com E-Mail: [email protected] Release Ver. 1.4 Page 1 of 7 Test Report No.: 23082101-SE-US-01 RF Exposure Report FCC ID: 2A2KDZXHP001 Applicant: Avedis Zildjian Co. Address: 22 Longwater Drive Norwell, MA 02061 Manufacturer: Avedis Zildjian Co. Address: 22 Longwater Drive Norwell, MA 02061 Product(s): Headphones Brand: Zildjian Test Model(s): ALCHEM-E Series Model(s): N/A Test Date: Oct 16, 2023~ Dec 15, 2023 Issued Date: Dec. 15, 2023 Issued By: Hwa-Hsing (Dongguan) Testing Co., Ltd. Address: No.101, Building N1, Yuyuan 2 Road, Yuyuan Industrial Park, HuangJiang Town, Dongguan City, People’s Republic of China Test Firm Registration No.: 915896 Standards: FCC Part 2(Section 2.1093) KDB 447498 D01 General RF Exposure Guidance v06 IEEE C95.1 The above equipment has been tested by Hwa-Hsing (Dongguan) Testing Co., Ltd., and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample’s EMC characteristics under the conditions specified in this report. Prepared by : Reviewed by : Nature Lee Dragon Long Approved by : Scott He “This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. Our report includes all the tests requested by you and the results thereof based upon the information that you provided to us. The report would be invalid without specific stamp of test institute and the signatures of tester and approver.” Lab: Hwa-Hsing (Dongguan) Testing Co., Ltd. Address: No.101, Building N1, Yuyuan 2 Road, Yuyuan Industrial Park, HuangJiang Town, Dongguan City, People’s Republic of China Te l : 0769-83078199 Web.: www.hwa-hsing.com E-Mail: [email protected] Release Ver. 1.4 Page 2 of 7 Test Report No.: 23082101-SE-US-01 Table of contents Release control record ............................................................................................... 3 1 General Information ......................................................................................... 4 1.1 General Description of EUT ............................................................................. 4 2 RF exposure limit ............................................................................................. 5 3 Calculation ....................................................................................................... 5 4 Calculation SAR test exclusion thresholds ....................................................... 6 Appendix – Information on the Testing Laboratories .................................................... 7 Lab: Hwa-Hsing (Dongguan) Testing Co., Ltd. Address: No.101, Building N1, Yuyuan 2 Road, Yuyuan Industrial Park, HuangJiang Town, Dongguan City, People’s Republic of China Te l : 0769-83078199 Web.: www.hwa-hsing.com E-Mail: [email protected] Release Ver. 1.4 Page 3 of 7 Test Report No.: 23082101-SE-US-01 Release control record Issue No. Reason for change Date Issued 23082101-SE-US-01 Original Release Dec. 15, 2023 Lab: Hwa-Hsing (Dongguan) Testing Co., Ltd. Address: No.101, Building N1, Yuyuan 2 Road, Yuyuan Industrial Park, HuangJiang Town, Dongguan City, People’s Republic of China Te l : 0769-83078199 Web.: www.hwa-hsing.com E-Mail: [email protected] Release Ver. 1.4 Page 4 of 7 Test Report No.: 23082101-SE-US-01 1 General Information 1.1 General Description of EUT Product Headphones Sample No. HS230905003/ HS230905004 Test Model(s) ALCHEM-E Series Model(s) N/A Status of EUT Engineering Prototype Power Supply Rating DC 5V from USB or DC 3.7V from battery Modulation Type GFSK, π/4 DQPSK, 8DPSK for FHSS, GFSK for DTS Transfer Rate 1/2/3Mbps Operating Frequency 2402 ~ 2480MHz Number of Channel 79 Output Power (Average) BLE: 0.49dBm EDR:1.49dBm Antenna Type and Antenna Gain PCB Antenna; 2.87dBi Gain Antenna Connector N/A Accessory Device USB-C Cable: Unshielded, 20cm Note: 1. Please refer to the EUT photo document (Reference No.: 23082101-01&02) for detailed product photo. 2. The above EUT information is declared by manufacturer and for more detailed features description, please refer to the manufacturer's specifications or User's Manual. Lab: Hwa-Hsing (Dongguan) Testing Co., Ltd. Address: No.101, Building N1, Yuyuan 2 Road, Yuyuan Industrial Park, HuangJiang Town, Dongguan City, People’s Republic of China Te l : 0769-83078199 Web.: www.hwa-hsing.com E-Mail: [email protected] Release Ver. 1.4 Page 5 of 7 Test Report No.: 23082101-SE-US-01 2 RF exposure limit The corresponding SAR Exclusion Threshold condition, listed below: 1) 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,16 where   f(GHz) is the RF channel transmit frequency in GHz   Power and distance are rounded to the nearest mW and mm before calculation   The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, the distance of 5 mm is applied to determine SAR test exclusion. 2) At 100 MHz to 6 GHz and for test separation distances > 50 mm, the SAR test exclusion threshold is determined according to the following…

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Lab: Hwa-Hsing (Dongguan) Testing Co., Ltd. Address: No.101, Building N1, Yuyuan 2 Road, Yuyuan Industrial Park, HuangJiang Town, Dongguan City, People’s Republic of China Te l : 0769-83078199 Web.: www.hwa-hsing.com E-Mail: [email protected] Release Ver. 1.5 Page 1 of 65 Test Report No.: 23082101-RF-US-01 FCC Part 15, Subpart C Test Report FCC ID: 2A2KDZXHP001 Applicant: Avedis Zildjian Co. Address: 22 Longwater Drive Norwell, MA 02061 Manufacturer: Avedis Zildjian Co. Address: 22 Longwater Drive Norwell, MA 02061 Product(s): Headphones Brand(s): Zildjian Test Model(s): ALCHEM-E Series Model(s): N/A Test Date: Oct 16, 2023~ Dec 15, 2023 Issued Date: Dec. 15, 2023 Issued By: Hwa-Hsing (Dongguan) Testing Co., Ltd. Address: No.101, Building N1, Yuyuan 2 Road, Yuyuan Industrial Park, HuangJiang Town, Dongguan City, People’s Republic of China Test Firm Registration No.: 915896 Designation No.: CN1255 Standards: 47 CFR FCC Part 15, Subpart C (Section 15.247) ANSI C63.10:2013 The above equipment has been tested by Hwa-Hsing (Dongguan) Testing Co., Ltd., and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample’s EMC characteristics under the conditions specified in this report. Prepared by : Reviewed by : Nature Lee Dragon Long Approved by : Scott He “This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. Our report includes all the tests requested by you and the results thereof based upon the information that you provided to us. The report would be invalid without specific stamp of test institute and the signatures of tester and approver.” Lab: Hwa-Hsing (Dongguan) Testing Co., Ltd. Address: No.101, Building N1, Yuyuan 2 Road, Yuyuan Industrial Park, HuangJiang Town, Dongguan City, People’s Republic of China Te l : 0769-83078199 Web.: www.hwa-hsing.com E-Mail: [email protected] Release Ver. 1.5 Page 2 of 65 Test Report No.: 23082101-RF-US-01 Table of Contents Release Control Record .................................................................................................................................. 4 1 Summary of Test Results ........................................................................................................................... 5 1.1 Measurement Uncertainty ..................................................................................................................... 5 1.2 Modification Record .............................................................................................................................. 5 2 General Information ................................................................................................................................... 6 2.1 General Description of EUT .................................................................................................................. 6 2.2 Description of Test Modes ..................................................................................................................... 7 2.3 Test Mode Applicability and Tested Channel Detail .............................................................................. 8 2.4 Description of Support Units ............................................................................................................... 10 2.5 Configuration of System under Test ..................................................................................................... 11 2.6 Duty Cycle of Test Signal .................................................................................................................... 12 3 Test Types and Results ............................................................................................................................ 13 3.1 Radiated Emission and Band-edge Measurement ............................................................................. 13 3.1.1 Limits of Radiated Emission andBand-edge Measurement ..................................................... 13 3.1.2 Test Instruments ....................................................................................................................... 14 3.1.3 Test Procedures ........................................................................................................................ 15 3.1.4 Deviation from Test Standard ................................................................................................... 16 3.1.5 Test Setup ................................................................................................................................. 17 3.1.6 EUT Operating Conditions ........................................................................................................ 18 3.1.7 Te s t Results .............................................................................................................................. 19 3.2 Conducted Emission Measurement .................................................................................................... 31 3.2.1 Limits of Conducted Emission Measurement ........................................................................... 31 3.2.2 Test Instruments ....................................................................................................................... 31 3.2.3 Test Procedures ........................................................................................................................ 32 3.2.4 Test Setup ................................................................................................................................. 32 3.2.5 EUT Operating Condition ........................…

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CustomerModel ReportVersion V5.0 ReportDate 2023-11-01 Prepared byChecked by BT-A n t e n n a Spec. Shenzhen Daxian Technology Co.,Ltd. HH2202 2 Shenzhen Daxian Technology Co.,Ltd. SCH 3 Head mode Shenzhen Daxian Technology Co.,Ltd. Antenna test results: System data ---- Passive S11 parameter view Free space state 4 Antenna passive efficiency: Shenzhen Daxian Technology Co.,Ltd. 5 Shenzhen Daxian Technology Co.,Ltd. Free space state Head mode Antenna Active Data -OTA data: 6 Shenzhen Daxian Technology Co.,Ltd. Antenna active Data --2D/3D radiation field shape: Free space state 7 Shenzhen Daxian Technology Co.,Ltd. Antenna active Data --2D/3D radiation field shape: Head mode 8 Shenzhen Daxian Technology Co.,Ltd.