Highlights Recording Formats: WAV, ACTPlayback Formats: MP3, WMA, WAV, ASFRecording Bit Rates: LP- 8 Kbps, SP- 32 Kbps Frequency Response: 20 Hz~20 K Hz Recording times: LP:250 Hours, SP:65 Hours Maximum Output: 5m W Audio Jack Size: 3.5mm Specification Storage Memory Type Flash Memory Memory Capacity 2GB Support Formats Audio Format MP3 WMA WAV Controls Control Type Button Data Transfer Connection Type USB (Universal Serial Bus) 2.0 Compatible Operating Systems Microsoft Windows Vista, Windows 98/SE/ME/2000/XP, Linux 2.4.2, Mac OS 10 Connections Headphones Jack 3.5 mm Stereo Jack Battery amp; Power Battery Type 2x AAA Batteries Work Time 3-5 hours Audio Properties Microphone Built-in Built in out Speaker 0.5w General Product Type MP3 Player SNR 80db Color Black Language English Net Weight 0.03kg Dimension 100x 35x 14mm What's in the box Mp 3 Player, User Manual, USB (Universal Serial Bus) Cable, Earphone