Mr. Handsfree Blue Luxe. Wireless range: 10 m, Bluetooth version: 2.1+EDR. Battery technology: Lithium Polymer (LiPo), Talk time: 5 h, Standby time: 120 h. Weight: 4 g. Charging time: 120 min, Operating voltage: 3.6 V. Compatibility: Telephone, Depth: 13 mm, Height: 27 mm