Key Specifications/Special Features: Video camera watch With hidden camera All metal material Video camera watch Camera: 0.3 pixels USB transfer rate: 2.0(Hs) Record format: AVI format Resolution: 352 x 288 Memory: 512M/1GB/2GB/4GB/8GB Built-in micphone Built-in lithium battery, 2 hours working No need to install driver if your system is Windows ME/2000/XP/MAX OS 9.2.2 or higher version