mobiBLU Cube DAH-1500i 1 GB Digital Audio Player Black World's smallest digital audio player, at 0.63 ounces and 0.94 inches square 1 GB memory holds 16 hours of MP3 and 32 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