Product Details: Booms Bass Bluetooth Soundbar L8 Equipped with Bluetooth wireless streaming technology Playback time up to 5 hours Charging time 3 hours Output power 3.7V Transmission distance 10 meters Produces powerful, deep bass sound, just like in a club Powered by a 1200mAh battery, the speaker lasts an impressive 5 hours. The Booms Bass Speaker definitely delivers high-quality bass.