Jabra/GN Netcom BT5020. Bluetooth version: 2.0+EDR. Battery technology: Lithium Polymer (LiPo), Talk time: 10 h, Standby time: 300 h. Dimensions (WxDxH): 76.8 x 9.7 x 44 mm, Weight: 16 g. Charging time: 2 min. Compatibility: Telephone