Professional recording pen chip of ATJ3315D, HD recordingTimestamp,Name the recording files by date automaticallyAGC function, adjusts the noise source automaticallyVoice Recorder,MP3 player,and USB flash driveSupport voice activated recordingDetect low battery and save the recording files automatically Playback function: One key to record/savePlug into headphones to listen to musicUSB adapterLong battery lifeBuilt in rechargeable 150mAh lithium batteryUSB 2.0 connector , easy to upload and download filesRecording Format: WAV/192kpbsMusic Playback Format: WMA/WAV/MP3/OGG etc. audio formatBattery Recording Time: About 15 hoursBattery Playing Time: About 10 hoursBattery: 150mAh lithium battery Battery charging time: About 2 hoursNoise-signal ratio: 80dbUSB Interface: USB 2.0 High Speed16GB Saving recording time: About 188HWorking Temperature: -5 to 40 degreesRecording Sample Rate: 48KHZHeadphone Jack: USB jackCompatible System: Windows 2000&aboveColour:B: SilverMaterial:plasticPackage Contents:1 x Mini RecorderOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.