1)       Music formats: compatible with MP3, WMA and other formats

2)     
2) Sound effect formats: Jazz, Classic, Rock, Pop, Normal
3) Play mode: repeat mode, unique preview mode
4) LCD board: 96 x 26 lattice, E1 blue backlight
5) Earphone: specially designed necklace type
6) SNR: 90dB
7) Earphone output: 5mW + 5mW
8) Output range: 20Hz - 20kHz
9) Records sampling frequently: 80kHz
10) Supported compression speed: 32Kbps - 256Kbps
11) Weight: 32g (not include battery)
12) Battery: 1pc AAA alkaline cell battery
13) Supported operation system: Windows 98 / Me / 2000 / XP / Mac OS