Jawbone Era Silver lining. Wireless range: 10 m, Bluetooth version: 2.1+EDR, Bluetooth profiles: A2DP, HFP, HSP. Ear coupling: intraaural. Battery technology: Lithium-Ion (Li-Ion), Talk time: 5.5 h, Standby time: 240 h. Dimensions (WxDxH): 51.3 x 14.5 x 24.1 mm, Weight: 10.2 g. Cables included: USB