Polarized lenses (anti-scratch) and TR 90 frame
Available flash memory size: 128MB, 256MB, 512MB, 1GB, 2G
Compatible format: MP3, WMA, ADPCM
Standard USB port: USB2.0 (full speed)
Integrated USB drive
Integrated microphone supporting ADPCM recording
Continuous playing time: 8 hours
Recharging time: 2 hours 230mAh / 3.7V macromolecule polymer Li-ion recharging battery
Automatically detected battery voltage and capacity B3