Feature: MP9-2/DVR4Its great for use as a hidden camera, portable camera, a hidden video, portable video etc. Real time recording in AVI video format Color video with voice Place it up high or conceal it down low. With built-in rechargeable battery so theres no long cord for you to hide. Card slot: Supprot 1 GB 2GB 4 GB or 8GB Playback video on PC Video compression: AVI video format, 352*288 Voice recording: Yes Internal memory: Yes Flash: 1 GB, 2GB 4 GB or 8GB Video file size; 1.5MB-2MB per min Recording mode: Continuous recording until memory is full or manually off Adaptor type: USB adaptor charging cable Battery type: Lithium-ion Record time: 1GB Record time 3-4h Battery use time: About 2-3h Fitting: CD for the manual and video playing software&USB cable