The camera diameter is 5.5mm with a flexible insertion tube and it can be easily inserted to see the small space which hard to see. The HD camera provides a good quality image with adjustable LED lights on the tip even you see in the dark place. The camera head and tube are waterproof (IP67) which makes it possible to work in multiple environments. With the switch to control the capture and LED (the LED can light up gradually up to your control). Driverless for Windows 2000 XP / Vista /win 7(see notes below). Specifications: Working platforms: WindowsLinux Resolution: 640 x 480 Light source: 6 highlighting LEDs (adjustable) Focusing: 2cm~infinity Camera OD: 5.5 mm- FOV: 60° Display speed: 20fps Interface: USB 2.0 USB cable length: 146cm