Premium Bluetooth speakers that connect with any Bluetooth device or directly to your device via 3.5 mm cable. Chain multiple Thump Boxes together to play at the same time. Place the Thump Box on a desk, table, cabinet, floor or most other surfaces and experience the music coming directly from the surface your Thump Box is placed on. The Thump Box will astound you with how it produces the sound through your furniture, and how amazingly sound can transmit into a room. 26-Watt power output Touch-pad controls 3.5 mm line-in and line-out ports can link multiple units together Charges via provided USB cable 1400mAh built-in lithium battery delivers approximately 3-4 hours play time 56 mm x 56 mm x 75 mm (2.25" x 2.25" x 3")