Reliable Quantity, Long term Hot Selling item! Best for promotion! 1) Image sensor: 100K pixel CMOS sensor 2) Internal memoy: 1M x 16b built-in SDRAM 3) Function: a) Digital video recording(no sound) b) Still photos c) PC camera 4) Focus: settings: 20cm ~ infinity (normal) 5) Power source: 2xAAA alkaline battery / USB power 6) Low voltage alarm: auto 7) Dimensions (L x W x T): 126 x 30 x 24mm 8) Weight: 36g (absence battery)