
Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.
SHENZHEN SHENGLAI TECHNOLOGY CO.,LIMITED ROOM 3110,BLOCK C,XINTIAN CENTURY BUSINESS CENTRE,FUMING ROAD,FUTIAN DISTRICT, SHENZHEN, China Date: 2022/3/23 FCC ID: 2AL9B-MZX4400 Dear Sir/Madam, We, SHENZHEN SHENGLAI TECHNOLOGY CO.,LIMITED, 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: Bluetooth Headphones Model no.: MZX4400, MZX4400-BPNK, MZX4400-BLUB, MZX4400-PGRN, MZX4400-APRG, MZX4400-BLKG, MZX4400-BLU, MZX4400-PNK Sincerely, Name/Title: LEO GUO Company: SHENZHEN SHENGLAI TECHNOLOGY CO.,LIMITED Address: ROOM 3110,BLOCK C,XINTIAN CENTURY BUSINESS CENTRE,FUMING ROAD,FUTIAN DISTRICT, SHENZHEN, China Phone: +86-755-82324457 Fax: +86-755-82324457 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: 2022/3/23 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 2AL9B-MZX4400 MZX4400 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: LEO GUO Company: SHENZHEN SHENGLAI TECHNOLOGY CO.,LIMITED Address: ROOM 3110,BLOCK C,XINTIAN CENTURY BUSINESS CENTRE,FUMING ROAD,FUTIAN DISTRICT, SHENZHEN, China Phone: +86-755-82324457 Fax: +86-755-82324457 E-Mail: [email protected]
SHENZHEN SHENGLAI TECHNOLOGY CO.,LIMITED ROOM 3110,BLOCK C,XINTIAN CENTURY BUSINESS CENTRE,FUMING ROAD,FUTIAN DISTRICT, SHENZHEN, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2022/3/23 To whom it may concern: We, SHENZHEN SHENGLAI TECHNOLOGY CO.,LIMITED the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2AL9B-MZX4400 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: LEO GUO Company: SHENZHEN SHENGLAI TECHNOLOGY CO.,LIMITED Address: ROOM 3110,BLOCK C,XINTIAN CENTURY BUSINESS CENTRE,FUMING ROAD,FUTIAN DISTRICT, SHENZHEN, China Phone: +86-755-82324457 Fax: +86-755-82324457 E-Mail: [email protected]
Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 4 EXTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 4 Fig.3 Fig.4 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 4 Fig.5 Fig.6 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 4 Fig.7
Label Location: FCC ID: 2AL9B-MZX4400 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.
Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 3 INTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 3 Fig.3 Fig.4 Bluetooth Antenna Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 3 Fig.5 Bluetooth Antenna
Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 3 RADIO FREQUENCY EXPOSURE Limit According to section B.4 of 447498 D04 Interim General RF Exposure Guidance v01 SAR-based thresholds are derived based on frequency, power, and separation distance of the RF source. The formula defines the thresholds in general for either available maximum time-averaged power or maximum time-averaged ERP, whichever is greater. If the ERP of a device is not easily determined, such as for a portable device with a small form factor, the applicant may use the available maximum time-averaged power exclusively if the device antenna or radiating structure does not exceed an electrical length of λ/4. As for devices with antennas of length greater than λ/4 where the gain is not well defined, but always less than that of a half-wave dipole (length λ/2), the available maximum time-averaged power generated by the device may be used in place of the maximum time-averaged ERP, where that value is not known. The separation distance is the smallest distance from any part of the antenna or radiating structure for all persons, during operation at the applicable ERP. In the case of mobile or portable devices, the separation distance is from the outer housing of the device where it is closest to the antenna. The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). Where and f is in GHz, d is the separation distance (cm), and ERP 20cm is per Formula (B.1). Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 3 The example values shown in Table B.2 are for illustration only. Frequency (MHz) Distance (mm) 5 10 15 20 25 30 35 40 45 50 300 39 65 88 110 129 148 166 184 201 217 450 22 44 67 89 112 135 158 180 203 226 835 9 25 44 66 90 116 145 175 207 240 1900 3 12 26 44 66 92 122 157 195 236 2450 3 10 22 38 59 83 111 143 179 219 3600 2 8 18 32 49 71 96 125 158 195 5800 1 6 14 25 40 58 80 106 136 169 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 3 Conducted Power Results Test Mode Channel Frequency (MHz) Measured Peak Output Power (dBm) GFSK 00 2402 -1.87 39 2441 -3.25 78 2480 -4.27 π/4-DQPSK 00 2402 -1.37 39 2441 -2.69 78 2480 -3.53 8-DPSK 00 2402 -0.85 39 2441 -2.2 78 2480 -3.22 Manufacturing tolerance GFSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) -1.5 -3.0 -4.0 Tolerance ±(dB) 1.0 1.0 1.0 π/4-DQPSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) -1.0 -2.5 -3.5 Tolerance ±(dB) 1.0 1.0 1.0 8-DPSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) -0.5 -2.0 -3.0 Tolerance ±(dB) 1.0 1.0 1.0 Results Test Mode Channel Frequency (MHz) Max. Tune Up Power (dBm, Peak) Max. Eirp including Tune Up (dBm, Peak) Max. Eirp including Tune Up (mW, Peak) Exemption Limit (mW) GFSK 2402 -0.5 -0.5 0.89 3 2441 -2.0 -2.0 0.63 3 2480 -3.0 -3.0 0.50 3 π/4-DQPSK 2402 0.0 0.0 1.00 3 2441 -1.5 -1.5 0.71 3 2480 -2.5 -2.5 0.56 3 8-DPSK 2402 0.5 0.5 1.12 3 2441 -1.0 -1.0 0.79 3 2480 -2.0 -2.0 0.63 3 The antenna gain of the EUT for BT is 0.0dBi (Max). the Maximum Eirp is used for Routine Evaluation Exemption according to B.4 of 447498 D04 Interim General RF Exposure Guidance v01. So, the SAR evaluation is not required.
Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 1 of 36 Appendix A RF Test Data for BT(BDR/EDR) (Conducted Measurement) Product Name: Bluetooth Headphones Trade Mark: Altec Lansing Test Model: MZX4400 FCC ID: 2AL9B-MZX4400 Environmental Conditions Temperature: 22.8 C Relative Humidity: 56% ATM Pressure: 100.0 kPa Test Engineer: Nancy Li Supervised by: Hugo Chen A.1 20 dB Bandwidth TestMode Antenna Channel 20db EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.867 2401.559 2402.426 --- --- 2441 0.936 2440.559 2441.495 --- --- 2480 0.891 2479.559 2480.450 --- --- 2DH5 Ant1 2402 1.308 2401.361 2402.669 --- --- 2441 1.314 2440.358 2441.672 --- --- 2480 1.290 2479.382 2480.672 --- --- 3DH5 Ant1 2402 1.284 2401.373 2402.657 --- --- 2441 1.311 2440.361 2441.672 --- --- 2480 1.287 2479.379 2480.666 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 2 of 36 Test Graph DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 3 of 36 2DH5_Ant1_2402 2DH5_Ant1_2441 2DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 4 of 36 3DH5_Ant1_2402 3DH5_Ant1_2441 3DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 5 of 36 A.2 Dwell Time TestMode Antenna Channel BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH5 Ant1 Hop 2.90 70 0.203 ≤0.4 PASS 2DH5 Ant1 Hop 2.90 110 0.319 ≤0.4 PASS 3DH5 Ant1 Hop 2.91 100 0.291 ≤0.4 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 6 of 36 Test Graph DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 7 of 36 2DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 8 of 36 3DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 9 of 36 A.3 Carrier Frequency Separation TestMode Antenna Channel Result[MHz] Limit[MHz] Verdict DH5 Ant1 Hop 0.972 ≥0.936 PASS 2DH5 Ant1 Hop 0.902 ≥0.876 PASS 3DH5 Ant1 Hop 1.002 ≥0.874 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 10 of 36 Test Graph DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 11 of 36 A.4 Hopping Channel Number TestMode Antenna Channel Result[Num] Limit[Num] Verdict DH5 Ant1 Hop 79 >=15 PASS 2DH5 Ant1 Hop 79 >=15 PASS 3DH5 Ant1 Hop 79 >=15 PASS Test Graph DH5_Ant1_Hop 2DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 12 of 36 3DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 13 of 36 A.5 Conducted Peak Output Power TestMode Antenna Channel Result[dBm] Limit[dBm] Verdict DH5 Ant1 2402 -1.87 ≤30 PASS 2441 -3.25 ≤30 PASS 2480 -4.27 ≤30 PASS 2DH5 Ant1 2402 -1.37 ≤20.97 PASS 2441 -2.69 ≤20.97 PASS 2480 -3.53 ≤20.97 PASS 3DH5 Ant1 2402 -0.85 ≤20.97 PASS 2441 -2.2 ≤20.97 PASS 2480 -3.22 ≤20.97 PASS Test Graph DH5_Ant1_2402 DH5_Ant1_2441 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 14 of 36 DH5_Ant1_2480 2DH5_Ant1_2402 2DH5_Ant1_2441 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 15 of 36 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 16 of 36 3DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 17 of 36 A.6 Band-edge for RF Conducted Emissions TestMode Antenna ChName Channel RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 -2.32 -49.99 ≤-22.32 PASS High 2480 -4.96 -49.18 ≤-24.96 PASS Low Hop_2402 -3.24 -50.68 ≤-23.24 PASS High Hop_2480 -4.55 -49.5 ≤-24.55 PASS 2DH5 Ant1 Low 2402 -2.31 -50.24 ≤-22.31 PASS High 2480 -7.43 -49.41 ≤-27.43 PASS Low Hop_2402 -6.61 -50.89 ≤-26.61 PASS High Hop_2480 -4.54 -49.76 ≤-24.54 PASS 3DH5 Ant1 Low 2402 -2.35 -50.42 ≤-22.35 PASS High 2480 -5.02 -48.75 ≤-25.02 PASS Low Hop_2402 -3.78 -50.83 ≤-23.78 PASS High Hop_2480 -6.38 -49.87 ≤-26.38 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 18 of 36 Test Graph DH5_Ant1_Low_2402 DH5_Ant1_High_2480 DH5_Ant1_Low_Hop_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 19 of 36 DH5_Ant1_High_Hop_2480 2DH5_Ant1_Low_2402 2DH5_Ant1_High_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 20 of 36 2DH5_Ant1_Low_Hop_2402 2DH5_Ant1_High_Hop_2480 3DH5_Ant1_Low_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 21 of 36 3DH5_Ant1_High_2480 3DH5_Ant1_Low_Hop_2402 3DH5_Ant1_High_Hop_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 22 of 36 A.7 RF Conducted Spurious Emissions Test Graph DH5_Ant1_2402_0~Reference DH5_Ant1_2402_30~1000 DH5_Ant1_2402_1000~26500 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 23 of 36 DH5_Ant1_2441_0~Reference DH5_Ant1_2441_30~1000 DH5_Ant1_2441_1000~26500 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 24 of 36 DH5_Ant1_2480_0~Reference DH5_Ant1_2480_30~1000 DH5_Ant1_2480_1000~26500 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 25 of 36 2DH5_Ant1_2402_0~Reference 2DH5_Ant1_2402_30~1000 2DH5_Ant1_2402_1000~26500 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 26 of 36 2DH5_Ant1_2441_0~Reference 2DH5_Ant1_2441_30~1000 2DH5_Ant1_2441_1000~26500 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 Report No.: TZ220202981-E Page 27 of 36 2DH5_Ant1_2480_0~Reference 2DH5_Ant1_2480_30~1000 2DH…
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Report No.: TZ220202981-E Page 1 of 38 FCC TEST REPORT Test report On Behalf of SHENZHEN SHENGLAI TECHNOLOGY CO.,LIMITED For Bluetooth Headphones Model No: MZX4400, MZX4400-BPNK, MZX4400-BLUB, MZX4400-PGRN, MZX4400-APRG, MZX4400-BLKG, MZX4400-BLU, MZX4400-PNK FCC ID: 2AL9B-MZX4400 Prepared for : SHENZHEN SHENGLAI TECHNOLOGY CO.,LIMITED ROOM 3110,BLOCK C,XINTIAN CENTURY BUSINESS CENTRE,FUMING ROAD,FUTIAN DISTRICT, SHENZHEN, China Prepared By : Shenzhen Tongzhou Testing Co.,Ltd 1th Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Date of Test: 2022/2/27 – 2022/3/4 Date of Report: 2022/3/5 Report Number: TZ220202981-E The test report apply only to the specific sample(s) tested under stated test conditions It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: TZ220202981-E Page 2 of 38 TEST RESULT CERTIFICATION Applicant’s name ................. : SHENZHEN SHENGLAI TECHNOLOGY CO.,LIMITED Address .................................. : ROOM 3110,BLOCK C,XINTIAN CENTURY BUSINESS CENTRE,FUMING ROAD,FUTIAN DISTRICT, SHENZHEN, China Manufacture's Name ............ : Guangdong Shenglai Technology Co., Ltd Address .................................. : Zhongtai Industrial Zone, Hengshan Village, Gurao Town, Chaoyang Area, Shantou City, Guangdong Province, China Product description Trade Mark ............................. : Altec Lansing Product name ........................... : Bluetooth Headphones Model No ................................ : MZX4400,MZX4400-BPNK, MZX4400-BLUB, MZX4400-PGRN, MZX4400-APRG, MZX4400-BLKG, MZX4400-BLU, MZX4400-PNK Standards ............................. : FCC Rules and Regulations Part 15 Subpart C Section 15.247 ANSI C63.10: 2013 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing Co.,Ltd takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ............................. ........... : Date (s) of performance of tests ........... : 2022/2/27- 2022/3/4 Date of Issue : 2022/3/5 Test Result ............................................ : PASS Testing Engineer : (Nancy Li) Technical Manager : (Hugo Chen) Authorized Signatory : (Andy Zhang) Report No.: TZ220202981-E Page 3 of 38 Revision History Revision Issue Date Revisions Revised By 00 2022/3/5 Initial Issue Andy Zhang Report No.: TZ220202981-E Page 4 of 38 TABLE OF CONTENTS Description Page 1. GENERAL INFORMATION ................................................................................................................ 5 1.1. Description of Device (EUT) ................................................................................................................... 5 1.2 Support equipment List ................................................................................................................................ 5 1.3 External I/O Cable ........................................................................................................................................ 5 1.4 Description of Test Facility .......................................................................................................................... 6 1.5 Statement of the Measurement Uncertainty ............................................................................................. 6 1.6 Measurement Uncertainty ........................................................................................................................... 7 1.7 Description of Test Modes .......................................................................................................................... 7 2. TEST METHODOLOGY/ ..................................................................................................................... 8 2.1 EUT Configuration ........................................................................................................................................ 8 2.2 EUT Exercise ................................................................................................................................................ 8 2.3 General Test Procedures ............................................................................................................................ 8 2.4. Test Sample ................................................................................................................................................. 8 3. SYSTEM TEST CONFIGURATION .................................................................................................. 9 3.1 Justification .................................................................................................................................................... 9 3.2 EUT Exercise Software ............................................................................................................................... 9 3.3 Special Accessories ..................................................................................................................................... 9 3.4 Block Diagram/Schematics ......................................................................................................................... 9 3.5 Equipment Modifications ............................................................................................................................. 9 3.6 Test Setup ..................................................................................................................................................... 9 4. SUMMARY OF TEST RESULTS .................................................................................................... 10 5. SUMMARY OF TEST EQUIPMENT .............................…
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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 2 TEST SETUP PHOTOS OF THE EUT Radiated Emission Below 1GHz Radiated Emission Above 1GHz Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AL9B-MZX4400 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2 Conducted Emission 、
| # | Rule Parts | Frequency Range | Power Output |
|---|---|---|---|
| 1 | 15C | 2.40 GHz - 2.48 GHz | 800.00 µW |

Wireless Earbuds
Equipment Class
DSS - Part 15 Spread Spectrum Transmitter
Wireless Earbuds
Equipment Class
DSS - Part 15 Spread Spectrum Transmitter
Wireless Headphone
Equipment Class
DSS - Part 15 Spread Spectrum Transmitter
Wireless Speaker
Equipment Class
DSS - Part 15 Spread Spectrum Transmitter
Wireless Headphone
Equipment Class
DSS - Part 15 Spread Spectrum Transmitter