Experience dynamic sound quality with the Altec Lansing iMW257 Mini H2O Bluetooth Wireless Speaker. Crafted from premium quality materials, this speaker is waterproof, dustproof and shockproof. The built-in Li-ion battery provides 8 hours of battery life which lets you enjoy uninterrupted music. Its built-in microphone lets you switch from music listening to taking phone calls. Featuring Bluetooth connectivity, this device can be paired with most of the smartphones, tablets and laptops.