Jabra/GN Netcom Arrow. Wireless range: 10 m, Bluetooth version: 2.1+EDR, Headset connectors supported: micro USB. Impedance: 32 Ом. Microphone sensitivity: 14 dB. Talk time: 4.5 h, Standby time: 132 h. Dimensions (WxDxH): 18 x 38.5 x 23.5 mm, Weight: 9 g