The dimension is only 24mm x 24mm x 24mm and weighs only 18 gram, but you can play your favorite music in 5 hours without recharging as it is powered by 3.7 lithium battery.
This Ultimate Smallest MP3 player has 2GB storage or equal to 200 hours of music, and support MP1, MP2, MP3 (bit rate: 8K bps- 320K bps), WMA, WMV, ASF, and WAV.
Regarding PC connection, the device utilizes USB 2.0 which compatible with Windows 98/ME/SE/2K/XP, Mac OS 10, and Linux 2.4.2. It also has another key features include built-in FM radio and recorder.
It’s available now at gadgetuniverese.com for 100 us dollars.