Iqua Headset smart badge bluetooth. Bluetooth version: 1.2. Battery technology: Lithium Polymer (LiPo), Battery capacity: 450 mAh, Talk time: 40 h. Dimensions (WxDxH): 100 x 70 x 12.5 mm, Weight: 45 g. Operating temperature range (T-T): -15 - 55 °C. Compatibility: Telephone