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 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 Working Temperature: -5 to 40 degrees Recording Sample Rate: 48KHZ Headphone Jack: USB jack Compatible System: Windows 2000\u0026above Colour:B: Silver Material:plastic Package Contents: 1 x Mini Recorder Only 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.