Speifications: Bluetooth Version: V4.2 Transmission Distance: Up to 30 feet(10 meters) Music Play Time: 4-6 hours Talk Time: 5-8 hours Standby time: 160 hours Cord Length: 75mm Distortion: 1% Charging Time: about 2 hours Voice prompt: power on / pairing / connected / battery low / power off Talk/Music time: up to 6 hrs Standby time: 200 hrs; Charge time: 2 hrs What's in the box 1 x Headset