LUXA2 BT-X3. Ear coupling: circumaural, Wearing style: Head-band, Driver unit: 30 mm. Connectivity technology: Wireless, Wireless range: 10 m, Bluetooth version: 2.1+EDR. Dimensions (WxDxH): 140 x 50 x 165 mm, Weight: 102 g. Battery life (max): 7.5 h, Battery recharge time: 1 h. Cables included: USB