SHARKK Bluetooth Speaker, Wireless, Mini And Portable with Rechargeable 8 Hour Battery, and Enhanced Bass Resonator Built in long lasting rechargeable battery charges in 3 hours and lasts 8 hours. Compact design with expandable top offers enhanced bass sound and convenient storage. In addition to Bluetooth, Built in 3.5mm cable to connect to all your music devices. Compatible with all Bluetooth enabled phone, tablets, computers, MP3 players, etc. None Bluetooth devices can still be used with the built in AUX chord