iSound DuraWaves Bluetooth Speaker (blue) Water-Resistant IPX5 certified Features a 40mm driver, the omni-directional speaker cone sends music in all directions A rechargeable lithium polymer battery provides up to 5 hours of continuous music playback DuraWaves comes in a small footprint and includes a wrist strap to take it anywhere Connects to Bluetooth devices and also works with non-Bluetooth devices using 3.5mm audio cable (included)