Bluetooth wireless earphone

Bluetooth earphone Features: Bluetooth wireless connection Built-in microphone Compatible with various mobile phone supporting Bluetooth Support Bluetooth Headset Profile,Handfree Profile Compact design and comfortable wearing Superior sound quality and simple operation Volume adjustable Bluetooth indicator Bluetooth V4.1,CompatibleV4.0/V3.0/V2.1/V2.0/V1.2 Communication time: Max. 5 hours Standby time: Max. 100 hours Effective distance: Max. 10 meters (about 30 feet) Unit