NGS Black Artica. Ear coupling: circumaural. Connectivity technology: Wireless, Wireless range: 10 m, Bluetooth version: 2.1+EDR. Dimensions (WxDxH): 162 x 153.5 x 32 mm, Weight: 103 g. Battery life (max): 10 h, Battery recharge time: 3 h. Package dimensions (WxDxH): 173 x 54 x 200 mm, Package weight: 275 g