Wireless Headphones Bluetooth 4.0 Bone Conduction Headphones Bluetooth Headset(Black)

Specification:
Speaker Type: Bone conduction speaker, 1 W Dual speaker
Microphone: Anti-interference microphones,-50 DB
Bluetooth IC: CSR8635
Effective range: 10 m
Receiving Sensitivity: 88 dBm
Bluetooth Profile: a2dp/HFP,HSP,AVRCP,GAVDP,AVDTP
Mono/Stereo: Stereo
Bluetooth Version: 4.0
Bluetooth Class(1/II): II
Weight: 57 g
BQB included(Y/N): No
TF card: Not supported
System language:No
FM Radio: Not supported
Impedance: 32Ω
Frequency range: 20-20 KHz
Battery: 230 mAh Polymer battery
Play time: 5 hrs
Standby time: 10 days
Charging time: 2 hrs from Micro USB port

Indicator light:
Battery low: Status Red light flashing rapidly.
Charging: Red Light on.
Full Charged: Blue Light on.
Awaiting match: Blue and red lights flashing.

Blue light double flash slowly: Fail to match, maybe the device is power off,or the distance of both is over 15m
Blue light flash slowly: Matched/dialing/playing audio.

Basic Operation
Power on: Long press Power button for 3 seconds
Power off: Long press Power button for 3 seconds
Answer call: Click the Multifunction key
Ending call: Click the Multifunction key
Switch songs: Long press "+"or"-" button
Volume control: One lick the volume button "+"or"-"
Play/Pause phone music: Click Multifunction key

Matching Method:
1.Long press power button for 6 seconds in Shutdown state.
2.Search Bluetooth device on your phone or other Bluetooth products,choose Windshear from the devices found.

Notes:If the connecting distance is over effective range(10m or 33feets), the headphones will disconnect with the device. Once in effective range again, they will connect again automatically. But if the disconnecting continues for long time(over 3mins), you may need manual rematch.