Nokia BH-609. Wireless range: 10 m, Bluetooth version: 2.1+EDR, Bluetooth profiles: HFP, HSP. Ear coupling: intraaural. Battery technology: Lithium Polymer (LiPo), Battery capacity: 100 mAh, Talk time: 6 h. Dimensions (WxDxH): 60.5 x 16.5 x 6.5 mm, Weight: 10 g. Operating temperature range (T-T): -15 - 55 °C