Jabra/GN Netcom BT5020. Bluetooth version: 2.0+EDR, Bluetooth profiles: Handsfree 1.0/Headset 1.1. Driver type: dynamic. Talk time: 10 h, Standby time: 300 h. Dimensions (WxDxH): 76.8 x 9.7 x 44 mm, Weight: 16 g. Operating temperature range (T-T): -20 - 60 °C, Storage temperature range (T-T): -20 - 45 °C