The Cosmic Bluetooth® speaker isn’t a regular Bluetooth® speaker, since it can be charged through wireless charging. Place the Cosmic on the included wireless charging pad or any wireless charging pad to charge the speaker. The Cosmic can also be charged with the included Micro USB cable. 5 Watt wireless charging output. Playback time at max volume: 1 hour. Bluetooth® Version 4.1. Bluetooth® working range is 10 meters (33ft).