2AF29NV4002-Way Wireless Headphones

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Nuvu LLC Address: 420 East 54th Street, #34H,New York,New York 10022,United States TEL : +1-3475632131 FAX: +1-3475632131 Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 10/8/2015 To whom it may concern: We, the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2AF29NV400 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, Signature Nuvu LLC Contact person: DAVID ANTEBI Title: Manager

Nuvu LLC Address: 420 East 54th Street, #34H,New York,New York 10022,United States TEL : +1-3475632131 FAX: +1-3475632131 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 10/8/2015 Request for Confidentiality Company name: Nuvu LLC FCC ID: 2AF29NV400 FCC Part 15 Certification Gentlemen, In accordance with CFR 47 § 0.459, Nuvu LLC hereby requests confidentiality of following attachments: (1) schematic diagrams, (2) detailed block diagrams, (3) detailed operational descriptions, (4) parts lists. These documents contain detailed system and equipment description and related information about the product which Nuvu LLC considers to be proprietary, confidential and a custom design and otherwise would not release to the general public. Since the design is a basis from which future technological products will evolve, Nuvu LLC considers that this information would be of benefit to its competitors and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Sincerely, Signature [DAVID ANTEBI] [Manager] Nuvu LLC 420 East 54th Street, #34H,New York,New York 10022,United States

External Photos TOTAL VIEW OF EUT TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT

FCC ID Label Location 2-Way Wireless Headphones Brand: Reverse Model:NV400 FCC ID: 2AF29NV400

Internal Photos OPEN VIEW OF EUT INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 INTERNAL VIEW OF EUT-3 INTERNAL VIEW OF EUT-4 INTERNAL VIEW OF EUT-5 INTERNAL VIEW OF EUT-6 INTERNAL VIEW OF EUT-7 INTERNAL VIEW OF EUT-8 Antenna INTERNAL VIEW OF EUT-9

Nuvu LLC Address: 420 East 54th Street, #34H,New York,New York 10022,United States TEL : +1-3475632131 FAX: +1-3475632131 Declaration concerning Antenna Specification It is hereby declared that the product Model No.: NV400 FCC ID: 2AF29NV400 fulfills the requirement in FCC test relating to the antenna type. The device specified above confirms to the FCC recommendations for internal antenna type described below: Model No. of antenna: N/A Type of antenna: PCB Antenna Gain of the antenna: 3 dBi Frequency range: 2402-2480 MHz The mounting of the antenna is fixed to the radio module and no other antenna should be used. Company name: Nuvu LLC Address: 420 East 54th Street, #34H,New York, City: New York ZIP / Postal code: 10022 Country: United States Place: Shenzhen Date: Oct.08,2015 Signature:

RF Exposure evaluation Product Description:2-Way Wireless Headphones Model Number: NV400 FCC ID: 2AF29NV400 According to 447498 D01 General RF Exposure Guidance v05 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, where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation According to the follow transmitter output power（P t ）formula： P t =（E x d） 2 /（30 x g t ） P t =transmitter output power in watts g t =numeric gain of the transmitting antenna (unitess) E=electric field strength in V/m d=measurement distance in meters (m) According to the above test data, Emax=96.41dBuv/m=0.066V/m,d=3m,g t =2 P t =（E x d） 2 /（30 x g t ）=(0.066x3) 2 /(30x2)=0.000653W=0.65mW The result is rounded to one decimal place for comparison Worse case is as below: [2440MHz -0.65mW output power] (0.65mW /5mm) .[√2.440(GHz)]= 0.203<3.0 for 1-g SAR Then SAR evaluation is not required NOTE: For the maximum power, you can refer FCC test report.

Page 1 of 75 FCC Test Report Report No.: AGC04833150801FE03 FCC ID : 2AF29NV400 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : 2‐Way Wireless Headphones BRAND NAME : Reverse MODEL NAME : See page 4 CLIENT : Nuvu LLC DATE OF ISSUE : Sep.23,2015 STANDARD(S) TEST PROCEDURE(S) : FCC Part 15 Rules REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd CAUTION: This report shall not be reproduced except in full without the written permission of the test laboratory and shall not be quoted out of context. Report No.: AGC04833150801FE03 Page 2 of 75 Report Revise Record Report Version Revise Time Issued Date Valid VersionNotes V1.0 / Sep.23,2015 Valid Original Report Report No.: AGC04833150801FE03 Page 3 of 75 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY ...................................................................................... 4 2. GENERAL INFORMATION .................................................................................................. 5 2.1. PRODUCT DESCRIPTION ........................................................................................................... 5 2.2. TABLE OF CARRIER FREQUENCYS .......................................................................................... 5 3. MEASUREMENT UNCERTAINTY........................................................................................ 7 4. DESCRIPTION OF TEST MODES ........................................................................................ 7 5. SYSTEM TEST CONFIGURATION ...................................................................................... 8 5.1. CONFIGURATION OF EUT SYSTEM .......................................................................................... 8 5.2. EQUIPMENT USED IN EUT SYSTEM ......................................................................................... 8 5.3. SUMMARY OF TEST RESULTS .................................................................................................. 8 6. TEST FACILITY .................................................................................................................... 9 7 ALL TEST EQUIPMENT LIST ............................................................................................... 9 8. RADIATED EMISSION ....................................................................................................... 10 8.1TEST LIMIT ................................................................................................................................... 10 8.2. MEASUREMENT PROCEDURE ................................................................................................ 11 8.3. TEST SETUP .............................................................................................................................. 13 8.4. TEST RESULT ............................................................................................................................ 15 9. BAND EDGE EMISSION .................................................................................................... 41 9.1. MEASUREMENT PROCEDURE ................................................................................................ 41 9.2 TEST SETUP ............................................................................................................................... 41 9.3 RADIATED TEST RESULT .......................................................................................................... 42 10. 20DB BANDWIDTH .......................................................................................................... 50 10.1. MEASUREMENT PROCEDURE .............................................................................................. 50 10.2. TEST SET-UP ........................................................................................................................... 50 10.3. LIMITS AND MEASUREMENT RESULTS ................................................................................ 50 11. FCC LINE CONDUCTED EMISSION TEST ..................................................................... 59 11.1. LIMITS OF LINE CONDUCTED EMISSION TEST ................................................................... 59 11.2. BLOCK DIAGRAM OF LINE CONDUCTED EMISSION TEST ................................................. 59 11.3. PRELIMINARY PROCEDURE OF LINE CONDUCTED EMISSION TEST .............................. 60 11.4. FINAL PROCEDURE OF LINE CONDUCTED EMISSION TEST ............................................. 60 11.5. TEST RESULT OF LINE CONDUCTED EMISSION TEST ....................................................... 61 APPENDIX A: PHOTOGRAPHS OF TEST SETUP ............................................................... 65 APPENDIX B: PHOTOGRAPHS OF EUT .............................................................................. 67 Report No.: AGC04833150801FE03 Page 4 of 75 1. VERIFICATION OF CONFORMITY Applicant Nuvu LLC Address 420 East 54th Street, #34H, New York NY 10022,United States Manufacturer Shenzhen Skyringe Electronic Technology Co.,Ltd. Address No.7 Tengfeng Avenue,D Building,Pioneer Park,3rd Industrial Zone,Fenghuang Village,Fuyong Town,Baoan District,shenzhen,Guangdong,china. Product Designation 2-Way Wireless Headphones Brand Name Reverse Test Model NV400 Series Model NV400 XX (XX = RD, WH and BL. RD = RED Color; WH = White Color; BL = Black) Different Description All the same except for the appearance color Date of test Sep.21,2015 to Sep.22,2015 Deviation None Condition of Test Sample Normal Report Template AGCRT-US-BR/RF We hereby certify that: The above equipment was tested by Compliance Certification Service(Shenzhen) Inc. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.4 (2009) and the energy emitted by the sample EUT tested as described in this report is in compliance with radiated emission limits of FCC …

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APPENDIX IV PHOTOGRAPHS OF TEST SETUP FCC LINE CONDUCTED EMISSION TEST SETUP FCC RADIATED EMISSION TEST SETUP