mobiBLU Cube DAH-1500i 512 MB Digital Audio Player Silver World's smallest digital audio player, at 0.63 ounces and 0.94 inches square 512 MB memory holds 8 hours of MP3 and 16 hours of WMA audio Plays MP3, WMA, and secure WMA (compatible with online stores and subscription services) Integrated FM radio with 20 presets and record function; built-in microphone and voice recorder Unique OLED display; internal lithium-polymer battery charged via USB connection or AC adapter