The Ounce Speaker goes everywhere. Sensational Sound. Compact Design. The Skullcandy Ounce Bluetooth Speaker is the total package. IPX7 Waterproof Design. Over16hrs of playback time. Ultra Portable & Lightweight IPX7 Waterproof 16-Hour Battery Downward Firing Passive Radiator Acoustically Transparent Waterproof Fab Skullcandy - Ounce Bluetooth Speaker