Sony Ericsson Mobile Bluetooth VoIP Headset Kit HBV-100 Compatible with K700i, K710a, P910a, T68i, T610, T616, T630, T637, W800, W600, Z520, Z600, W300, W81 Talk Time: 12 Hours Standby Time: 300 Hours Includes Headset, Charger, Bluetooth USB Adapter, and Manual 1 Year warranty