Xqisit LZ380 Bluetooth Stereo Headset - Matt Gold Bluetooth 2.1 EDR: A2DP, AVRCP, HFP, HSP 10 m Bluetooth range Reinforced metal headband, 3.7V  350 mA Li-ion battery (with a 10 hour operating time) In-built microphone 2 hour charging time via USB charger (included)