VHC-AAI-DH1080-00Wireless Headphone System

DH1080 2.4GHz Digital Wireless/Wired Headphone with Noise Cancelling Instruction Manual (Read carefully the instructions before using this system) 2 1. WELCOME Thank you for purchasing this system! This 2.4GHz stereo digital headphone system offers you advances in wireless transmission technology with built-in noise cancelling feature in which you can listen to ultra stereo sound from your audio components. The universal transmitter dongle is compatible to any audio sources, say DVD player, CD player, i-pod, i-phone, MP3, TV set, VCR, Hi-Fi system or radio. Line-In Jack on headset can also work as a wired headset. 2. FEATURES •2.4GHz FHSS Digital technology •High quality stereo sound that is virtually interference-free •Transmission is not restricted solely to line of sight •Noise Cancelling Feature on Headphone •Digital Pairing System on Headphone & Transmitter •Electronic Volume Control on Headphone •Built-in Rechargeable Lithium Battery pack in Dongle and Headphone •Auto Shut-off on Headphone •Auto On/Off RF function on transmitter •3.5mm Line in feature for corded headphone application •Operating distance up to 15 feet •Airplane audio adapter 3. PACKAGING •RF receiver headphone •RF dongle transmitter •Power adapter with •USB charging cable with 2x charging ports •3.5mm to 3.5mm audio cable •Airplane audio adapter •Travel Case •Instruction manual 3 4. INSTALLATION DONGLE TRANSMITTER •Press the Power button on dongle for 3 seconds until Blue LED lights up. •Plug in the 3.5mm audio plug to your audios Source. •Turn on your audio source and the LED will flash. HEADPHONE RECEIVER •Press the Power button for 3 seconds on the Right side to turn on wireless feature and Green LED will light up. •The headphone is now linked up with dongle and LED will turn to Blue. •Turn on Noise Cancelling feature by tuning the On/Off switch on Left side to On. 1. 2.4GHz On/Off 2. 3.5mm audio jack 3. PAIR 4. VOL+, VOL- 5. ANC ON/OFF 6. 2.5mm DC jack 7. 3.5mm audio wire Powerbutton 2.5mm DC jack 4 5. OPERATIONS To start up this system and enjoy the music, please take following steps: •Turn on the audio source, plug in the 3.5mm plug of the dongle with audio source •Turn on the dongle by pressing the Power buttons for 3 seconds. Blue LED will light up. •Turn on the headphone receiver by pressing Power button for 3 seconds, LED will be Green. •When the audio link is established between dongle and headphone, Blue LED on dongle flashes and headphone become solid. •Turn on Noise Cancelling feature on headphone by moving the On/Off switch on the left side to On. •When listening is ended, turn OFF the dongle and headphone by pressing Power button for 3 seconds. Turn off Noise Cancelling feature on headphone by moving the On/Off switch on the left side to Off. Pairing: If the headphone remains not working after following the operation processes above, start Pairing process by pressing the Power button for 12 seconds In the dongle in shutdown state. After that, pressing the headphone pair button until the blue LEDs flash. The LEDs will change to solid blue when pairing process is finished. NOTE: In order to protect the dongle and save power, the dongle will automatically switch to stand-by mode (LED will turn off) after approximately 2 minutes if there is no audio signal, or the signal that it receives from the audio source is too weak for proper reception. If however the signal returns to an acceptable level, then the transmitter will automatically switch back on. The dongle will automatically shut off if stand-by mode last for more than 15 minutes. The headphone receiver will automatically shut off if getting no signal from transmitter in 15 minutes. 5 CHARGING THE BATTERIES •Switch OFF both the dongle and headphone. •Apply the charging cable one end with 2 charging ports and the other with USB. •Charging can be processed by connecting with PC or with power adapter. •Charging dongle and headphone can be processed simultaneously. •Be sure to charge new batteries for 5 hours before using them for the first time in the dongle and headphone. The red indicator light (LED) will be on continuously during battery charging. •When charging is finished, the dongle LED will be green and headphone red LED will be off. Corded Headphone Application The headphone can be applied in corded mode. Simply connect the headphone and the audio source by the supplied 1.5 meters audio cable. You will then enjoy the audio in wired mode. WARNINGS: ** The battery pack must be fully charged before first use. An initial 5 hours charge is required to guarantee an acceptable service life for the rechargeable batteries. Always ensure that the dongle and the headphones are switched to the Off position while the batteries are charging. 6 FCC statements 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. Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the follow…

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Acoustic Arc international ltd. PHOENIX TESTLAB GmbH Product Certification Königswinkel 10 D 32825 Blomberg To Whom It May Concern: Please be advised that Acoustic Arc international ltd. authorizes TÜV SÜD Hong Kong Ltd. to act on our behalf, until otherwise notified, for applications submitted to PHOENIX TESTLAB GmbH (PTL). Thank you for your attention to this matter. [Acoustic Arc international ltd] TÜV SÜD Hong Kong Ltd. ______________________ _____________________ [George Chan] Nicolas Cheng [Deputy General manager] Assistance Project Manager [1 st Feb. 2011]

Ersteller: U. Rodemeier Revision: 03 Erstelldatum: 03.08.01 Datum: 4.10.2006 Seite 1 von 1 Request for Confidentiality PHOENIX TESTLAB GmbH Date: 1 st Jan. 2011 Product Certification Königswinkel 10 D 32825 Blomberg RE: Certification Application Model : DH1080 FCC ID: VHC-AAI-DH1080-00 Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commission’s Rule, the applicant hereby requests confidential treatment of information accompanying this application as outlined below: • Schematics • Block Diagram • Operational 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 that pursuant to rule 0.457, disclosure od this application and all accompanying documentation will not be made before the date of the GRANT for this application ́. Thank you for your attention in this matter. Applicant’s Company Acoustic Arc international ltd. address : Unit 311B, 3/F, IC Development Centre, No. 6 Science Park West Avenue, Hong Kong Science Park, Shatin, N.T. Hong Kong. Signature : ____________________________ Job Title and Dept. : Deputy General manager

Page 1 of 2 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong. Appendix B Date: 2011-01-28 Test report no.: 60.870.11.003.01F Model no.: DH1080 (Transmitter) Photos of EUT – External EUT Photos Page 2 of 2 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong. Test report no.: 60.870.11.003.01F Model no.: DH1080 (Transmitter) Ancillary - AC/DC adaptor

SCALE:1:1SCALE:1:1 DH1080 Rating Label artwork 1 2 . 0 40.0 Transmitter rating label position Receiver rating label position Headphone “L” side Receiver rating label Size: 40X12mm Background: Black Font: White Coating: Matte UV Transmitter rating label Size: 7x26mm Background: Black Font: White Coating: Matte UV 2.4GHz Wireless Headphone Model No.: DH1080 Charger DC IN: 5V 500mA Made in China 2 . 4 G H z W i r e l e s s H e a d p h o n e M o d e l N o . : D H 1 0 8 0 C h a r g e r D C I N : 5 V 5 0 0 m A M a d e i n C h i n a Bottom View 2.4GHz Transmitter Model No.: DH1080 FCC ID: VHC-AAI-DH1080-00 Charger DC IN: 5V 500mA 2.4GHz Transmitter Model No.: DH1080 FCC ID: VHC-AAI-DH1080-00 Charger DC IN: 5V 500mA 7 . 0 26.0 13.5 10.0 4 . 5

Page 1 of 3 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong. Appendix C Date: 2011-01-28 Test report no.: 60.870.11.003.01F Model no.: DH1080 (Transmitter) Photos of EUT – Internal EUT Photos Page 2 of 3 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong. Test report no.: 60.870.11.003.01F Model no.: DH1080 (Transmitter) Page 3 of 3 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong. Test report no.: 60.870.11.003.01F Model no.: DH1080 (Transmitter)

TEST REPORT Date: 2011-01-28 Report No.: 60.870.11.003.01F Page 1 of 29 TUV SUD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong Applicant: Acoustic Arc International Ltd. Unit 311B, 3/F, IC Development Centre, No.6 Science Park West Avenue, Hong Kong Science Park, Shatin, N.T. Hong Kong Description of Samples:Model name: 2.4GHz Wireless Headphone System (Transmitter) Brand name: aai Model no.:DH1080 FCCID:VHC-AAI-DH1080-00 Date Samples Received:2011-01-06 Date Tested:2011-01-06 to 2011-01-26 Investigation Requested:FCC Part 15 Subpart C, Section 15.247 Conclusions:The submitted product COMPLIED with the requirements of Federal Communications Commission [FCC] Rules and Regulations Part 15. The tests were performed in accordance with the standards described above and on Section 2.2 in this Test Report. Remarks:---- Checked by:Approved by:- Nicolas ChengJeff Pong Assistant Project ManagerProject Manager Wireless & Telecom DepartmentWireless & Telecom Department Report No.: 60.870.11.003.01F Page 2 of 29 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong CONTENT: Cover Page 1 of 29 Content Page 2-3 of 29 1.0General Details 1.1Test Laboratory Page 4 of 29 1.2Applicant Details Page 4 of 29 1.3Equipment Under Test [EUT] Page 5 of 29 1.4 Related Submittal(s) Grants Page 5 of 29 2.0Technical Details 2.1Investigations Requested Page 6 of 29 2.2Test Standards and Results Summary Page 6 of 29 3.0Test Methodology 3.1Radiated Emission Page 7 of 29 3.2Field Strength Calculation Page 7 of 29 3.3Conducted Emission Page 7 of 29 4.0Test Results 4.1 Number of Frequency Hopping Page 8 of 29 4.2 20dB Bandwidth Measurement Page 9-10 of 29 4.3 Hopping Channel Carrier Frequency Separation Page 11 of 29 4.4 Average Time of Occupancy Page 12-14 of 29 4.5 Pseudorandom Hopping Algorithm Page 15 of 29 4.6 Band Edge Measurement Page 16-17 of 29 4.7 Maximum Output Power Page 18-19 of 29 4.8 Out ofBand Emissionsand Emissions in Restricted Bands Page 20-23 of 29 4.9 Conducted Emission on AC Mains Page 24-27 of 29 Report No.: 60.870.11.003.01F Page 3 of 29 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong 5.0RF Exposure Compliance Requirement Page 28 of 29 6.0List of Measurement Equipments Page 29 of 29 Appendix A Photos of Test Setup Appendix B External EUT Photos Appendix C Internal EUT Photos Report No.: 60.870.11.003.01F Page 4 of 29 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong 1.0General Details 1.1Test Laboratory EMC Laboratoryregistered by FCC with FCCRegistration Number:538587 1.2Applicant Details Applicant Acoustic Arc InternationalLtd. Unit 311B, 3/F., IC Development Centre, No.6 Science Park West Avenue, Hong Kong Science Park, Shatin, N.T. Hong Kong Manufacturer Acoustic Arc InternationalLtd. Unit 311B, 3/F., IC Development Centre, No.6 Science Park West Avenue, Hong Kong Science Park, Shatin, N.T. Hong Kong Report No.: 60.870.11.003.01F Page 5 of 29 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong 1.3Equipment Under Test [EUT] Description of EUT Product Description:2.4G WirelessHeadphoneSystem(Transmitter) ModelNo.:DH1080 Brand Name: aai FCCID:VHC-AAI-DH1080-00 Rating:-DC5.0V,500mApowered byAC/DC power adaptor Or DC 3.7V build-in battery cell Operated Frequency:2406 -2472 MHz No. of Operated Channel:31 Accessories and Auxiliary Equipments:- iPod - AC/DC power adaptor. Antenna Type:Integral Manufacture of Antenna:Acoustic Arc InternationalLtd. Antenna Gain:0dBi Antenna Model:N/A General Operation of EUT The Equipment Under Test (EUT) is a Transmitter of the Wireless Headphone System operated at 2.4GHz. FHSS Operation Principle: This module is controlled by microchip to generate Pseudorandom Frequency Hopping Sequence, this module support 31 hopping channels. Refer to section 4.5 of this report to have more detail of Pseudorandom Hopping Algorithm. 1.4Related Submittal(s) Grants This is a signal application subjected to Certificate Authorization. Report No.: 60.870.11.003.01F Page 6 of 29 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong 2.0Technical Details 2.1Investigations Requested Perform ElectroMagnetic Interference measurement in accordance with FCC 47CFR [Codes of Federal Regulations] Part 15: 2009 and ANSI C63.4: 2003 for FCC Verification 2.2Test Standards and Results Summary Tables Test ConditionTest RequirementTest Result PassN/A Number of Frequency Hopping Section 15.247 ( a1 ) 20dB Bandwidth Measurement Section 15.247 ( a1 ) Hopping Channel Carrier Frequency Separation Section 15.247 ( a1 ) Average Time of Occupancy Section 15.247 ( a1 ) Pseudorandom Hopping Algorithm Section 15.247 ( a1 ) Band Edge Measurement Section 15.247 Maximum Output PowerSection 15.247 ( b1 ) Out of Band EmissionSection 15.247 ( d ) Radiated Emission in Restricted Band Section 15.247 ( d ) Conducted Emission on AC Mains Section 15.207 RF ExposureSection 15.247 ( i ) Antenna RequirementSection 15.203 See note 1 Note 1 :The EUT uses a permanently attached antenna, which in accordance to Section 15.203, is considered sufficient to comply with the provisions of this section. Remark: N/A - Not Applicable Report No.: 60.870.11.003.01F Page 7 of 29 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong 3.0Test Methodology 3.1Radiated Emission The sample was placed 0.8m above the ground plane on a standard emission test site *. Measurements in both horizontal and vertical polarities were performed. During the test, each emission was maximized by: having the EUT continuously working, investigated all operating modes, rotated about all 3 axis (X, Y & Z) and considered typical configuration to obtain worst position, manipulating interconnecting cables, rotating turntable, varying antenna height from 1m to 4m in both horizontal and …

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Page 1 of 2 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong. Appendix A Date: 2011-01-28 Test report no.: 60.870.11.003.01F Model no.: DH1080 (Transmitter) Photo of Test Setup – Radiated Emission Front side Back side Page 2 of 2 TÜV SÜD Hong Kong Ltd. 3/F, West Wing, Phase 2, 10 Science Park West Avenue, Shatin, Hong Kong. Test report no.: 60.870.11.003.01F Model no.: DH1080 (Transmitter) Photo of Test Setup – Conducted Emission Front side