Iqua Headset BHS-603. Interface type: Point-to-point, Wireless range: 10 m, Bluetooth version: 2.0+EDR. Driver type: dynamic. Battery technology: Lithium Polymer (LiPo), Battery capacity: 110 mAh, Talk time: 9 h. Dimensions (WxDxH): 48 x 10 x 25 mm, Weight: 12 g. Operating temperature range (T-T): 0 - 45 °C, Storage temperature range (T-T): -20 - 55 °C