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DISCOVER D312U User Manual

Telephone headset

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D312U
Telephone Headset

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Summary of Contents for DISCOVER D312U

  • Page 1 D312U Telephone Headset...
  • Page 2 User Manual D312U is a lightweight telephone headset with retractable headband. It’s compatible with all kinds of mobile devices and computers, supports the functions of playing music and HD web phone calls. 1. Design...
  • Page 3: Button Function

    1) Retractable headband 2) Microphone 3) 3.5mm AUX Connector 4) USB Connector 5) Volume Control 6) Volume “+ ” 7) Volume “- ” 8) Mute 9) Microphone Mute 2. Button Function Note: The led indicator is red only when microphone is mute.
  • Page 4 Icon Name Function While playing music, short press to Mute pause or continue to play. Short press “+” to volume up; Long press Volume “+” “+” to make it up to maximum volume. Short press “-” to volume down; Long press Volume “-”...
  • Page 5 3. Connection...
  • Page 6 4. Operation Instruction 1) For Windows Computer Step 1: Click on “Start” at lower left corner, and then click “Settings”.
  • Page 7 Step 2: Input “Audio” in “Windows Settings”, and then choose “Manage audio devices”.
  • Page 8 Step 3: In sound options, choose “D312U” in the list of “Playback” and “Recording”. D312U...
  • Page 9 2) For MAC or iOS Computer Step 1: Click top left corner of your screen and select “System Preferences”.
  • Page 10 Step 2: Select “Sound” from the list.
  • Page 11 Step 3: In sound options, choose “USB Audio Device” in the list of output and input.
  • Page 12: Specification

    5. Specification 1) Nominal Impedance (AC): 32Ω±15% 2) Rated working power: 10mW 3) Effective frequency range: 20Hz-20KHz 4) Microphone sensitivity: -42±3dB 5) Headset sensitivity: 115±3dB 6) Sound distortion: ≤3% 6. Common Problems Q1: No sound in headset. Solution: Ensure the connection is correct; ensure USB port of your computer is in good condition;...
  • Page 13: Points For Attention

    plugs into the jack perfectly; ensure the mute function is off. Q2: A sharp voice in speaker or microphone. Solution: The volume maybe too loud or the microphone is too close to your mouth. Please adjust your speaker to a suitable volume and the microphone in a proper distance.
  • Page 14 damage, short circuit and warranty failure. 2) Disassembling your earphone may damage the earphone and would be beyond our service warranty. 3) Do not use your earphone in a dusty environment. 4) Please use a clean, soft and dry cloth to clean your earphone. 5) Keep placing the earphone in its original package when not using 6) Do not let your children play with the earphone.