Features: -Shell made from metal and zinc alloy material, anti-fall strongly.  -Professional recording pen chip of ATJ3315D, HD recording.  -Timestamp,Name the recording files by date automatically.  -AGC function, adjusts the noise source automatically.  -Voice Recorder,MP3 player,and USB flash drive.  -Support voice activated recording.  -Detect low battery and save the recording files automatically.  -Playback function: One key to record/save.  -Plug into headphones to listen to music.  -USB adapter.  -Long battery life.  -Built in rechargeable 150mAh lithium battery.  -USB 2.0 connector , easy to upload and download files.  -Color: Black/Silver.     Specification: Recording Format:WAV/192kpbs;  Music Playback Format:WMA/WAV/MP3/OGG etc. audio format;  Battery Recording Time:About 15 hours;  Battery Playing Time:About 10 hours;  Battery:150mAh lithium battery   Battery charging time: About 2 hours;  Noise-signal ratio:80db;  USB Interface:USB 2.0 High Speed;  16GB Saving recording time: About 188H/ 32GB saving recording time: About 376H;  Working Temperature:-5 to 40 degrees;  Recording Sample Rate:48KHZ;  Headphone:USB interface;  Compatible System:Windows 2000&above;  Size(mm):70*23*8 (L*W*T);  Net Weight:About 34g;  Color:Silver ;     Package Included:  1 * Silver Voice recorder;  1 * English manual;  1 * USB data cable