2A3F3-X6PROHeadset

ShenzhenDiduikong Technology Development Co.,Ltd Add: Floor 5,Building B, Dong Cai industrial park Gushu, Baoan Shenzhen China Date: 2021-10-29 FCC ID: 2A3F3-X6PRO Dear Sir/Madam, We, ShenzhenDiduikong Technology Development Co.,Ltd Hereby declares the following statement for Federal Communications Commission, PCB board, circuit, structure and internal of these model(s) are the same, Only model number is different for these model: Product name: Headset Model no.: X6PRO, X1PRO, X2PRO, X3PRO, X5PRO, X7PRO, X8PRO, X9PRO, X10PRO, X11PRO, X1MAX, X2MAX, X3MAX, X5MAX, X6MAX, X7MAX, X8MAX, X9MAX, X10MAX, X11MAX Sincerely, Name/Title： Jianhong Xie/Manager Company: ShenzhenDiduikong Technology Development Co.,Ltd Address: Floor 5,Building B, Dong Cai industrial park Gushu, Baoan Shenzhen China Phone: 0755-61108427 Fax: 0755-61108427 E-Mail: [email protected]

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date:<2021-10-29> Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name 2A3F3-X6PRO X6PRO For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name/Title： Jianhong Xie/Manager Company: ShenzhenDiduikong Technology Development Co.,Ltd Address: Floor 5,Building B, Dong Cai industrial park Gushu, Baoan Shenzhen China Phone: 0755-61108427 Fax: 0755-61108427 E-Mail: [email protected]

ShenzhenDiduikong Technology Development Co.,Ltd Floor 5,Building B, Dong Cai industrial park Gushu, Baoan Shenzhen China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2021-10-29 To whom it may concern: We, ShenzhenDiduikong Technology Development Co.,Ltd the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2A3F3-X6PRO including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title： Jianhong Xie/Manager Company: ShenzhenDiduikong Technology Development Co.,Ltd Address: Floor 5,Building B, Dong Cai industrial park Gushu, Baoan Shenzhen China Phone: 0755-61108427 Fax: 0755-61108427 E-Mail: [email protected]

GTSL202110000092 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1 of 4 Product Name: Headset Test Model No.: X6PRO EUT Constructional Details External Photo GTSL202110000092 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 4 GTSL202110000092 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 4 GTSL202110000092 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 4 ------End------

FCC ID: 2A3F3-X6PRO FCC ID: 2A3F3-X6PRO

GTSL202110000092 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1 of 4 Product Name: Headset Test Model No.: X6PRO EUT Constructional Details Internal Photo GTSL202110000092 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 4 GTSL202110000092 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 4 GTSL202110000092 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 4 ------End------

RF Exposure evaluation FCC ID: 2A3F3-X6PRO 1.1. Applicable Standard According to §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to §1.1310 and §2.1093 RF exposure requirement KDB447498 v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 1.2. Requirement According to KDB447498 D01 General RF Exposure Guidance v06 Section 4.3.1 Standalone SAR test exclusion considerations: “Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition, listed below, is satisfied. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions.22 The minimum test separation distance is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander (see 5) of section 4.1). To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, typically in the SAR measurement or SAR analysis report, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting is required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for the SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions; for example, handheld PTT two-way radios, handsets, laptops & tablets etc.23 “ [(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 • The result is rounded to one decimal place for comparison • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below 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, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. 1.3. Manufacturing tolerance GFSK(Peak) Antenna 1 Channel Channel 1 Channel 38 Channel 74 Target (dBm) 6.0 6.0 6.0 Tolerance ±(dB) 1.0 1.0 1.0 GFSK(Peak) Antenna 2 Channel Channel 1 Channel 38 Channel 74 Target (dBm) 7.0 7.0 6.0 Tolerance ±(dB) 1.0 1.0 1.0 Page 2 of 2 2. E v a l u a t i o n R e s u l t Evaluation Results Band/Mode f (GHz) Antenna Distance (mm) RF output power (including tune-up tolerance) SAR Test Exclusion Threshold SAR Test Exclusion dBm mW 2.4G Antenna 1 2.450 5 7.0 5.0119 1.5690<3.0 Yes 2.4G Antenna 2 2.450 5 8.0 6.3096 1.9752<3.0 Yes 3. S i m u l t a n e o u s T r a n s m i s s i o n f o r S A R E x c l u s i o n The sample support one BT modular and SRD modular, they supports difference antenna, need consider simultaneous transmission; ∑ of (the highest measured or estimated SAR ant1 +SAR ant2 )/1.6 = (0.2113+0.2660)/1.6 = 0.3 < 1.0; 4. C o n c l u s i o n The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB 447498 v06 .....................End of Report.........................

Global United Technology Services Co., Ltd. Report No.: GTSL202110000092F01 Authorized Signature: Robinson Luo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 40 TEST REPORT Applicant: Shenzhen Diduikong Technology Development Co.,Ltd Address of Applicant: 5 Floor, Building B, Dong Cai industrial park, Gushu, Baoan, Shenzhen, China.518126 Manufacturer/Factory: Shenzhen Diduikong Technology Development Co.,Ltd Address of Manufacturer/Factory: 5 Floor, Building B, Dong Cai industrial park, Gushu, Baoan, Shenzhen, China.518126 Equipment Under Test (EUT) Product Name: Headset Model No.: X6PRO, X1PRO, X2PRO, X3PRO, X5PRO, X7PRO, X8PRO, X9PRO, X10PRO, X11PRO, X1MAX, X2MAX, X3MAX, X5MAX, X6MAX, X7MAX, X8MAX, X9MAX, X10MAX, X11MAX Trade Mark: PYTHON FLY FCC ID: 2A3F3-X6PRO Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of sample receipt: Oct. 15,2021 Date of Test: Oct. 15,2021-Oct. 19,2021 Date of report issued: Oct. 19,2021 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTSL202110000092F01 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 40 2 Version Version No. Date Description 00 Oct. 19,2021 Original Prepared By: Date: Oct. 19,2021 Project Engineer Check By: Date: Oct. 19,2021 Reviewer Report No.: GTSL202110000092F01 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 40 3 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 VERSION .................................................................................................................................................. 2 3 CONTENTS .............................................................................................................................................. 3 4 TEST SUMMARY ..................................................................................................................................... 4 5 GENERAL INFORMATION ...................................................................................................................... 5 5.1 GENERAL DESCRIPTION OF EUT ......................................................................................................... 5 5.2 TEST MODE ........................................................................................................................................ 7 5.3 DESCRIPTION OF SUPPORT UNITS ....................................................................................................... 7 5.4 DEVIATION FROM STANDARDS ............................................................................................................. 7 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ................................................................................... 7 5.6 TEST FACILITY .................................................................................................................................... 7 5.7 TEST LOCATION ................................................................................................................................. 7 5.8 ENVIRONMENTAL CONDITIONS ............................................................................................................. 7 6 TEST INSTRUMENTS LIST ..................................................................................................................... 8 7 TEST RESULTS AND MEASUREMENT DATA .................................................................................... 10 7.1 ANTENNA REQUIREMENT ................................................................................................................... 10 7.2 CONDUCTED EMISSIONS ................................................................................................................... 11 7.3 CONDUCTED OUTPUT POWER ........................................................................................................... 14 7.4 CHANNEL BANDWIDTH ...................................................................................................................... 15 7.5 POWER SPECTRAL DENSITY ............................................................................................................. 19 7.6 BAND EDGES .................................................................................................................................... 23 7.6.1 Conducted Emission Method ..................................................................................................... 23 7.6.2 Radiated Emission Method ........................................................................................................ 25 7.7 SPURIOUS EMISSION ......................................................................................................................... 27 7.7.1 Conducted Emission Method ..................................................................................................... 27 7.7.2 Radiated Emission Method ........................................................................................................ 32 8 TEST SETUP PHOTO ............................................................................................................................ 40 9 EUT CONSTRUCTIONAL DETA…

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GTSL202110000092 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1 of 2 Product Name: Headset Test Model No.: X6PRO Test Setup Photo Radiated Emission GTSL202110000092 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 2 Conducted Emission ------End------