Media Type: Flash Memory
Capacity: 4 GB
Interface: USB 2.0
Headphone frequency: 20 - 20,000 Hz
LED Indicators: 2
Battery charge indicator 
Cables: USB cable: 70 cm earphone cable: 85cm
Supported audio formats: MP3, WMA, OGG
Output Power: 600 mV RMS
USB Powered 
Battery technology: Lithium-ion
Battery capacity: 130 mAh
Battery recharge time: 2.5 h
Continuous audio playback time: 5 hours
Compatible Operating Systems: All OS
Dimensions mm (in * w * d): 12 * 29 * 44