Alihihen SF888 Wireless Bluetooth V4.0 Stereo Headset Communication Earphones with Microphone,Folding Earpiece with NFC Function(White)

Specifications:
Driver diameter:40mm
Impedanceïš32ohm
Sensitivity:82dB +/- 3dB
Frequency rangeïš2042~2480MHZ
Frequency responseïš20~20000HZ
Battery: rechargable lithium Ion battery(3.7V/220mA)
Charging power:computer USB interface DC5;DC5V(500mA) ,Travel chagrger:DC5V(500mA0,Car charger
Bluetooth protocol standards:V4.0
Receiver frequency:15m/360°
Charging time need:3(hours)
Successive working time:10(hours)
S/N ratio:-82dB
Output power: 150MW
USB Interface: High speed USB2.0

Package Including:
1pc Bluetooth headset
1pc 3.5m audio cable
1pc USB charging cable
1pc Pouch
1pc User manual
Charging:
The headset use a non-detachable built-in Lithium Ion rechargeable battery.It takes approximately 3 hrs for fully charged.
Connect:
1.pair the headset with your mobile phone.
2.Connect your headset to the computer with software USB Bluetooth dongle(please read the instruction manual of USB Bluetooth dongle),then you can use it to online video chat(Skype,QQ,Yahoo etc.)and listen to the music on the computer.
You can immerse yourself in rich,full stereo sound for your music,movies,video calls,and everything else.