BULLET 2C , Sensor size 1/2.7” , Pixel Resolution 4 Mega Pixel , Microphone Built-in , IEEE 802.11 b/g , IEEE 802.11n , 1xMicroSD Card Slot , Supports card capacities up to 256GB , Power options 12V , Power supply requirements DC 12V0.5A , Dimensions 147.7×74.2×74.2mm , box quantity 1