Dimension: L 49.3 x W 14.5 x H 9.5mm Bluetooth Version: 4.0 (Supports Bluetooth version 4.0) Auto Pairing: Yes Charging Interface: Micro USB (USB Charging) Talk Time: Up to 9 hours Operating Range: 30 metres Accesories in the Box: Jabra BOOST Headset， Earhook Pack， Rubber USB Cable， Eargel pack