Product Supported computer: all windows system computers and MAC Note: The mobile phone needs to support OTG and UVC functions before it can be used Diameter 7mm, 6 LED lights adjustable (can be turned off or on) Line length: 3.5m, 5m 1.7MM Diameter Camera Semi-rigid Cable Endoscope: The USB Endoscope camera probe is ultra-thin, only 7mm, we can use this Endoscope in many hard-to-reach, narrow, and confined places at home or outdoors, such as HVAC, vent pipe, engines, air conditioners, sofa corners, bathtub pipes, toilets, etc. Unlike similar USB borescopes with soft cables, this one comes with a semi-rigid cable that can be forwarded to the narrower place more easily. 2.720P HD Camera: This updated one comes with 640*480 Resolution to choose from. The focal distance/Best observing distance: 3~10cm(1.2~3.93inches). 3.Easy to use: with USB, Type C Connector, This endoscope can only be used with Android smartphones with OTG and UVC function, windows computer, and MacBook.Please see the manual for details 4.IP67 Waterproof: The Snake Camera is also a helpful tool when you have to find your treasures or other small objects from the bathtubs or pipes with water in. Dont stay too long in the water depth is more than three meters. 5.6 dimmable LEDs: Inside the camera at the top of the line, there are built-in 6 adjustable LED lights, and the lights can also be turned off, which can ensure normal use in dark environments.