Nokia BH-218. Wireless range: 10 m, Bluetooth version: 2.1+EDR, Bluetooth profiles: HFP, HSP. Ear coupling: intraaural. Battery technology: Lithium Polymer (LiPo), Battery capacity: 70 mAh, Talk time: 8 h. Dimensions (WxDxH): 54 x 19 x 13.8 mm, Weight: 13.8 g. Operating temperature range (T-T): -15 - 55 °C