2AALP-S3Bluetooth Headphone

SCS-F18: Project and Product Certification Representative Authorization Letter Page 1 of 2 Rev 5.0 775 Montague Expressway Milpitas, CA 95035 Tel: 408-526-1188 Fax: 408-526-1088 Email: [email protected] Project and Product Certification Representative Authorization Letter Reason for Amendment (current / obsolete) Revision History Approved Date From To Initial Release (obsolete) 1.0 1.0 Nov-14-2006 Revised wording (obsolete) 1.0 2.0 Sept–25-2007 Updated company template (obsolete) 2.0 3.0 Jan-31-2012 Updated letter information (obsolete) 3.0 4.0 May-23-2014 Added FCC ID field (current) 4.0 5.0 Sept 16 2014 SCS-F18: Project and Product Certification Representative Authorization Letter Page 2 of 2 Rev 5.0 XSOUND Innovation Technologies Co., Ltd . 2015-11-23 To: SIEMIC, INC. 775 Montague Expressway, Milpitas, CA 95035 USA Dear Sir/Madam, Re: Product Certification Representative Authorization Letter We, XSOUND Innovation Technologies Co., Ltd . hereby authorize SIEMIC, Inc. to act as a Certification Body for certifying for the following project(s): Product name: Bluetooth Headphone Model Number: S3 FCC ID: 2AALP-S3 Sincerely, signature Willis. Xiang / QA Manager E-mail: [email protected] Phone: 0755-66800688 Fax: 0755-29480805 Address: Building C, Junxing industrial zone B, Haoye Road, Heping, Fuyong, Baoan,Shenzhen,China

SCS-F19: Confidentiality Request Letter Page 1 of 2 Rev 4.0 775 Montague Expressway Milpitas, CA 95035 Tel: 408-526-1188 Fax: 408-526-1088 Email: [email protected] Confidentiality Request Letter Reason for Amendment (current / obsolete) Revision History Approved Date From To Initial Release (obsolete) 1.0 1.0 Nov-14-2006 Adding CFR 2.459 (obsolete) 1.0 2.0 August – 11 - 2008 Updated company template & Added text box (obsolete) 2.0 3.0 Jan-31-2012 Added IC confidentiality letter form (current) 3.0 4.0 March-26-2015 SCS-F19: Confidentiality Request Letter Page 2 of 2 Rev 4.0 XSOUND Innovation Technologies Co., Ltd . 2015-11-23 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD Subject: Permanent Confidentiality Request for FCC ID: 2AALP-S3 We hereby request confidential treatment of information accompanying this application as outlined below: - Block Diagram - Schematics - Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 & 0.459 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Client’s signature : Client’s name & title : Willis. Xiang Contact information / address : Building C, Junxing industrial zone B, Haoye Road, Heping, Fuyong, Baoan,Shenzhen,China

Label Location Proposed Label Location on EUT

BT Antenna

FCC ID: 2AALP-S3 Portable device According to §15.247(e)(i) and §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 KDB447498 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； 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, a distance of 5 mm is applied to determine SAR test exclusion. We use 5mm as separation distance to calculated. Maximum measured transmitter power: Transmit Frequency (GHz) Mode Measured Power (dBm) Tune-up power (dBm) Max tune-up power(dBm) Result calculation 1-g SAR 2.402 GFSK 2.256 2±1 3 0.618 3.00 2.441 GFSK 3.777 3±1 4 0.785 3.00 2.480 GFSK 2.105 2±1 3 0.628 3.00 2.402 π/4-DQPSK 0.026 0±1 1 0.390 3.00 2.441 π/4-DQPSK 2.102 2±1 3 0.623 3.00 2.480 π/4-DQPSK 0.255 0±1 1 0.397 3.00 2.402 8-DPSK 0.711 0±1 -1 0.246 3.00 2.441 8-DPSK 2.466 2±1 3 0.623 3.00 2.480 8-DPSK 0.623 0±1 1 0.397 3.00 2.402 GFSK 4.069 4±1 5 0.980 3.00 2.440 GFSK 4.625 4±1 5 0.988 3.00 2.480 GFSK 3.618 3±1 4 0.791 3.00 Conclusion: For the max result 0.988≤ 3.0 for 1-g SAR extremity SAR, No SAR is required. Sincerely, Signature Company Name: Emtek (Shenzhen) Co., Ltd. Address: Bldg 69, Majialong Industry Zone, NanshanDistrict, Shenzhen, China. David Lee/ Manager

TRF No.:FCC 15.247/A Page 1 of 64 Report No.: ES151023046E1 Ver.1.0 Access to the World FCC 47 CFR PART 15 SUBPART C CERTIFICATION TEST REPORT For Bluetooth Headphone MODEL No.: S3 FCC ID: 2AALP-S3 Trademark: XSOUND REPORT NO.: ES151023046E1 ISSUE DATE: November 15, 2015 Prepared for Shenzhen XSOUND Innovation Technologies Co.,Ltd. Building C, Junxing industrial zone B, Haoye Road, Heping, Fuyong ,Baoan, Shenzhen, 518103，China Prepared by EMTEK（Shenzhen） Co., Ltd. Bldg 69, Majialong Industry Zone, Nanshan District, Shenzhen, Guangdong, China TEL: 86-755-26954280 FAX: 86-755-26954282 TRF No.:FCC 15.247/A Page 2 of 64 Report No.: ES151023046E1 Ver.1.0 Access to the World Table of Contents 1 TEST RESULT CERTIFICATION ............................................................................................................. 3 2 EUT TECHNICAL DESCRIPTION ............................................................................................................ 4 3 SUMMARY OF TEST RESULT ................................................................................................................ 5 4 TEST METHODOLOGY ........................................................................................................................... 6 4.1 GENERAL DESCRIPTION OF APPLIED STANDARDS ............................................................... 6 4.2 MEASUREMENT EQUIPMENT USED .......................................................................................... 6 4.3 DESCRIPTION OF TEST MODES ................................................................................................ 7 5 FACILITIES AND ACCREDITATIONS ...................................................................................................... 8 5.1 FACILITIES .................................................................................................................................... 8 5.2 LABORATORY ACCREDITATIONS AND LISTINGS ..................................................................... 8 6 TEST SYSTEM UNCERTAINTY .............................................................................................................. 9 7 SETUP OF EQUIPMENT UNDER TEST ............................................................................................... 10 7.1 RADIO FREQUENCY TEST SETUP 1 ........................................................................................ 10 7.2 RADIO FREQUENCY TEST SETUP 2 ........................................................................................ 10 7.3 CONDUCTED EMISSION TEST SETUP .................................................................................... 11 7.4 SUPPORT EQUIPMENT ............................................................................................................. 12 8 FREQUENCY HOPPING SYSTEM REQUIREMENTS ......................................................................... 13 8.1 STANDARD APPLICABLE ........................................................................................................... 13 8.2 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ............................................... 13 8.3 EQUAL HOPPING FREQUENCY USE ....................................................................................... 14 8.4 FREQUENCY HOPPING SYSTEM ............................................................................................. 14 9 TEST REQUIREMENTS ......................................................................................................................... 15 9.1 20DB BANDWIDTH ..................................................................................................................... 15 9.2 CARRIER FREQUENCY SEPARATION ..................................................................................... 21 9.3 NUMBER OF HOPPING FREQUENCIES ................................................................................... 27 9.4 AVERAGE TIME OF OCCUPANCY (DWELL TIME) ................................................................... 29 9.5 MAXIMUM PEAK CONDUCTED OUTPUT POWER .................................................................. 32 9.6 CONDUCTED SUPRIOUS EMISSION ....................................................................................... 38 9.7 RADIATED SPURIOUS EMISSION ............................................................................................ 45 9.8 CONDUCTED EMISSION TEST ................................................................................................. 59 9.9 ANTENNA APPLICATION ............................................................................................................ 64 TRF No. 1 TE Applica Manufa Produc Model N File Nu Date of Measu r FCC FCC The ab o procedu procedu this repo The tes D a Pr Re Ap :FCC 15.247/ EST RESU ant: acturer: t Description Number: mber: f Te s t : rement Proce C 47 CFR Pa C 47 CFR Pa ove equipme ures, and e ures given in ort is in com t results of t h ate of Test : repared by : eviewer : pprove & Aut /A ULT CERTI Shenz Buildin Shenz Shenz Buildin Shenz n: Blueto S3 ES151 Octob edure Used: STANDAR art 2, Subpar art 15, Subpa ent was test equipment co n ANSI C63.1 pliance with his report rel thorized Sign IFICATION zhen XSOUN ng C, Junxin zhen, 518103 zhen XSOUN ng C, Junxin zhen, 518103 ooth Headph 1023046E1 ber 23, 2015 APPLIC RD rt J, June 11 art C, May 9 ed by EMTE onfigurations 10 (2013) an the requirem ate only to th ner : Page 3 of N ND Innovatio g industrial z 3，China ND Innovatio g industrial z 3，China one to Novembe CABLE ST , 2014 , 2014 EK（Shenzh s shown in nd the energy ments of FCC he tested sam Octobe f 64 on Technolog zone B, Haoy on Technolog zone B, Haoy er 15, 2015 TANDARD en） Co., L this report y emitted by C Rules Part mple identifie r 23, 2015 to Andy W Joe Xia/S Lisa Wan Report ies Co.,Ltd. ye Road, He ies Co.,Ltd. ye Road, He DS TEST R PAS Ltd. 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Conducted Measurement Photo Radiated Emission Test