Diameter: 8mm; Length: 170mm, up to 1600 x 1200 resolution; Can be used to detect mouth, nose, ears, scalp, hair and skin, and also circuit board, particles, jewelry, antique, biology, electronic components; Comes with waterproof sleeve, convenient for disinfectant; Please note that the lens of host can be wiped slightly by alcohol, don't let liquid and other gadget permeate into len's inner; Accessories can be disinfected by alcohol or high temperature.