Product Description:  Tiny size makes it for a variety of uses.  It's great for use as a hidden cam, spy cam , etc.   Real time recording in AVI video format Continuous recording until memory is full or manually off  Color video with voice Internal rechargeable battery Internal memory:1GB,2GB or 4GB Playback video on PC Data Sheet:  Video compression : AVI video format,352*288  Voice recording: Yes  Internal memory: Yes  Flash:1 GB or 4 GB  Video file size; >500KB 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 : up to 3h for 1GB Battery use time : about 90-100minuts Weight:30g  Dimension:150mm*15mm*15mm