Bluetrek G3 BT. Wireless range: 10 m, Bluetooth version: 1.2. Driver type: dynamic, Acoustic system: clip-on. Talk time: 13 h, Standby time: 504 h. Dimensions (WxDxH): 67.5 x 19.5 x 19.5 mm, Weight: 12 g. Material: Metal/Plastic, Compatibility: Multi