Iqua Essence BHS-316. Interface type: Point-to-point, Bluetooth version: 2.0+EDR, Bluetooth profiles: Handsfree 1.5/Headset 1.1. Battery technology: Lithium Polymer (LiPo), Battery capacity: 100 mAh, Talk time: 6 h. Dimensions (WxDxH): 58 x 10.7 x 17.2 mm, Weight: 10 g. Operating temperature range (T-T): 0 - 55 °C. Charging time: 120 min