T3ZBK-WLHP-06-TXWireless Auto-Tune Headphones

Agency Authorization Letter FCC ID: T3ZBK-WLHP-06-TX Date: September 21,2006 To whom it may concern: We, the undersigned, hereby authorize Safety-Frequency Technology Service Co., Ltd.(ST Service) to act on our behalf, as our agent ,in the following matters related to the FCC approval of our products: report submittal, related correspondence, the signing of all documents relating to these matters, and any other lawful activity necessary to obtain such certification. Any act carried out by ST Service within the scope of this authorization shall have the same effects as our own. This authorization shall expire 6months from original date. If you have any questions regarding the authorization, please don’t hesitate to contact us. Thanks! Sincerely , Raymond Kwong Advanced Audio Concepts, Ltd. Suite 1206 Greenfield Tower Concordia plaza Tsim Sha Tsui East Kowloon, Hong kong Tel: 852-3525 1496 Fax: 852-3525 1498

Confidentiality Request Date : September 21, 2006 Federal Communications Commission Authorization and Evaluation Division FCC ID: T3ZBK-WLHP-06-TX Pursuant to Sections 0.457 and 0.459 of the commission’s rules, the applicant hereby requests confidential treatment of information accompanying this application as outlined below: 1, Block diagram 2, Schematics 3, Operation description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands the pursuant to Rule 0.457, disclosure of this application and all accompanying documentation will not be made before the date of the grant for this application. Sincerely , Raymond Kwong Advanced Audio Concepts, Ltd. Suite 1206 Greenfield Tower Concordia plaza Tsim Sha Tsui East Kowloon, Hong kong Tel: 852-3525 1496 Fax: 852-3525 1498

Photo 1 Appearance of EUT Photo 2 Appearance of EUT

Label FCC ID: T3ZBK-WLHP-06-TX 50mm 30mm BL528 FCC ID: T3ZBK-WLHP-06-TX This device complies with Part 15 o 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. The Label must not be a stick-on paper label. The Label on these products must be permanently affixed to the product and readily visible at the time of purchase and must last the expected lifetime of the equipment not be readily detachable. Proposed Label Location on EUT EUT Bottom View/Proposed FCC ID Label Location FCC ID: T3ZBK-WLHP-06-TX Label

Photo 1 Inside of EUT Photo 2 Inside of EUT Photo 3 Inside of EUT Photo 4 Inside of EUT Page 2/3 Photo 5 Adaptor Page 3/3

Safety-Frequency Technology Service Co., Ltd. Room 1732,International Culture Building,3039 ShenNan Road Central , Futian Dstrict, Shenzhen,Guangdong, P.R.China Zip Code:518000 Tel: +86-755-86101921 Fax: +86-755-86101921 www.stservice.cn Report No.: ST20060915 Page 1/25 FCC TEST REPORT Test Laboratory : Shenzhen Academy of Metrology and Quality Inspection EMC Laboratory Guangdong EMC Compliance Test Center Site Location : Bldg. of Metrology &Quality Inspection, Longzhu Road, Shenzhen, Guangdong, China Tel Fax : 0086-755-26941545 : 0086-755-26941531,26941723 Email : [email protected] Safety-Frequency Technology Service Co., Ltd. Room 1732,International Culture Building,3039 ShenNan Road Central , Futian Dstrict, Shenzhen,Guangdong, P.R.China Zip Code:518000 Tel: +86-755-86101921 Fax: +86-755-86101921 www.stservice.cn Report No.: ST20060915 Page 2/25 TABLE OF CONTENTS TEST REPORT DECLARATION........................................................................................................3 1. TEST RESULTS SUMMARY...................................................................................................4 2. GENERAL INFORMATION....................................................................................................5 2.1. Report information............................................................................................................5 2.2. Laboratory Accreditation and Relationship to Customer.................................................5 2.3. Measurement Uncertainty.................................................................................................6 3. PRODUCT DESCRIPTION......................................................................................................6 3.1. EUT Description...............................................................................................................6 3.2. Related Submittal(s) / Grant (s)........................................................................................6 3.3. Block Diagram of EUT Configuration..............................................................................6 3.4. Operating Condition of EUT............................................................................................6 3.5. Special Accessories...........................................................................................................7 3.6. Equipment Modifications..................................................................................................7 3.7. Support Equipment List....................................................................................................7 3.8. Test Conditions.................................................................................................................7 4. TEST EQUIPMENT USED.......................................................................................................7 4.1. Test Equipment Used to Measure Conducted Disturbance..............................................7 4.2. Test Equipment Used to Measure Radiated Disturbance and bandwidth.........................7 5. CONDUCTED DISTURBANCE TEST....................................................................................8 5.1. Test Standard and Limit....................................................................................................8 5.2. Test Procedure..................................................................................................................8 5.3. Test Arrangement..............................................................................................................8 5.4. Test Data...........................................................................................................................8 6. RADIATED DISTURBANCE TEST......................................................................................11 6.1. Test Standard and Limit..................................................................................................11 6.2. Test Procedure................................................................................................................11 6.3. Test Arrangement............................................................................................................11 6.4. Test Data.........................................................................................................................12 7. OCCUPIED BANDWIDTH.....................................................................................................14 7.1. Test Standard and Limit..................................................................................................14 7.2. Test Procedure................................................................................................................14 7.3. Test Arrangement............................................................................................................14 7.4. Test Data.........................................................................................................................14 8. BAND EDGE.............................................................................................................................17 8.1. Test Standard and Limit..................................................................................................17 8.2. Band Edge FCC 15.249(d) Limit....................................................................................17 8.3. Test Procedure................................................................................................................17 8.4. Test Arrangement............................................................................................................17 8.5. Test Data.........................................................................................................................17 9. ANTENNA REQUIREMENT.................................................................................................18 APPENDIX I TEST P…

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Photo 1 Conducted Emission Test Photo 2 Radaited Emission Test