Firstsing Wireless Bluetooth V4.2 Stereo Headset DSP Noise Reduction Running Swimming Sport Handsfree Earphone for IOS Android

Bluetooth:V4.2
Chip:AIROHA AB1526
Battery:65mAh
Frequency Range:2.401GHZ～2.482GHZ
Operation:Class 2
Mode:headset/handfree/A2DP/AVRCP
Operating range:5~10 metres
MP3 Playing Time:4 hours
Standby Time:100 hours
Charging Time:2 hours
Sweatproof technology: Protect this Bluetooth headset from sweat, and coffee spills so you can wear the headset in the office or at the gym.
180 degree adjustable ear-fit design allows you to adjust the angle to fit on your right or left ear.
You could also move the boom mic up and down,this make it very easy for people to tell if you are on a phone call or not.
The power source is built in rechargeable li-ion battery.
Suitable for IOS and Android Smartphones.
Connect 2 cell phones at the same time.