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Instruction Manual 
 

Model No.: VT-H78 

Product name: Bluetooth Headphone 

Manufacture: Shenzhen Vtsonic Co.,Ltd. 

Address:    No.35,the 2nd Industrial Road, Tangxiayong Village, 

Songgang Town, Bao'an District, Shenzhen, China 

 

 

Thank you for purchasing this Bluetooh headset. 

Please read the instructions and warnings carefully before use to ensure safe and satisfactory enjoyment of this 

product. 

 

 

Important safety information 

 

Adjust the headphone sound to the proper volume. Loud sound may damage your ears. 

Don’t turn the volume so high that you can’t hear what’s around you. 

Use caution or temporarily discontinue use in potentially hazardous situations. 

Don not use ht headphones while ridding a bicycle, motor bike, or while driving a car. The use of headphones may create 

a traffic hazard and is illegal in many areas. 

Not exposure or toss headphone into a fire. It will probably caused an accident 

Don't disassemble headset any if you are not an expert. 

Place out of reach of small children to prevent accidental ingestion of small parts. 

 

WARNING 

This equipment is not waterproof. To prevent a fire or shcok hazard, do not place any container filled with liquid near this 

equipment(such as a vase or flower pot) or expose it to dripping, splashing,rain or moisture. 

 

To prevent a fire hazard, do not place any naked flame sources (such as lighted candle) on the equipment. 

 
 
 
 
 
 

Summary of Contents for VT-H78

Page 1: ...temporarily discontinue use in potentially hazardous situations Don not use ht headphones while ridding a bicycle motor bike or while driving a car The use of headphones may create a traffic hazard and is illegal in many areas Not exposure or toss headphone into a fire It will probably caused an accident Don t disassemble headset any if you are not an expert Place out of reach of small children to...

Page 2: ...P AVRCP HFP HSP Operating distance 10M Battery 320mA Charging time about 2 hours Charging current 220mA Music playing time about 16 hours 50 volume noise canceling off ANC working time about 8 hours Driver Unit Ø 40mm Sensitivity 105dB 1mW S P L at 1KHz Frequency Range 20Hz 20KHz Rated Power 10mW Max Power 20mW ...

Page 3: ... or more to power on and enter the pairing mode The pairing mode is confirmed by the LED indicator s flashing blue and red 2 When in the paring mode if pairing is not completed within about five minutes the power will automatically turn off 3 Turn on the power to the bluetooth device you wish to pair with and begin pairing search for this unit from the paired bluetooth device Set the bluetooth dev...

Page 4: ...o use the wireless headphones to listen to music form a bluetooth device you must first perform pairing with the bluetooth device using the A2DP audio profile Controls when listening to music button Press once increase the volume Press and hold advance to next track or chapter button Press once decrease volume Press and hold return to beginning of track or chapter MFB button Press once play pause ...

Page 5: ...onfirm that connection with bluetooth device is set for profile A2DP Confirm that the connected music playback device is set for PLAY Confirm that sound volume controls on both wireless headphones and music playback device are set to appropriate levels Sound is distorted when playing music Check that no other devices utilizing the 2 4GHz wavelength are nearby and that no obstructions black the sig...

Page 6: ...o try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Caution Any changes or modifications to this device n...

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