Uhold&reg;5m 4 Leds Waterproof USB Endoscope Borescope LED Inspection Snake Tube Pipe Camera Camera head outer diameter is 10mm Vista or Win 7 need install software "amcap" which in the CD Lens: f 2.4, Pixels: 300000 pixels Waterproof level: IP66 4 LED lux luminance lights can work better when the light very dark and you can adjust the intensity of the light