URGE Basics Soundome Bluetooth Wireless Speaker with Built-In Long Lasting Rechargable Battery and Crisp Sound - Retail Packaging - Red/Black Wireless speaker for use with Bluetooth-enabled devices Built-in Rechargeable lithium-ion battery enables you to take your music anywhere up to 5 hours of playtime 3 Watt premium speaker Bluetooth version: V2.1 400 mAh internal battery