Jabra/GN Netcom BT 2020. Interface type: Mini USB, Wireless range: 10 m, Bluetooth version: 2.0+EDR. Driver unit: 11 mm, Acoustic system: clip-on. Microphone sensitivity: -20 dB. Talk time: 8 h, Standby time: 360 h. Dimensions (WxDxH): 9 x 46 x 82 mm, Weight: 16 g