New Mini #18 Micro HD Camera Video Loop Record DVR Driving Recorder 808 Car Key Chain 720P H.264 Pocket Camcorder Video: 1280x720 H.264 30fps .AVI . USB 2.0 TV-OUT (VIDEO,AUDIO) Pictures: JPEG; 2048*1536 . Webcam Mode: 640x480 VGA External power supply Recording Media: MicroSDHC (up to 32GB). Class IV or higher is highly recommended Built-in rechargeable high volume Lithium-ion Battery 250mA (50*20*30mm).it can record about 60 minutes,and the battery is changeable.