Feature: 1. LARGE FOCAL LENGTH: The USB WiFi endoscope uses an 8mm camera with an image resolution of up to 720P and a focal length of 4cm for clearer imaging. 2. ENGINE INSPECTION: WiFi endoscope can be used to detect carbon buildup in car engine, observing the condition of the engine helps to prolong the life of the engine. 3. SUPERIOR PERFORMANCE: Endoscope supports long pipe or sewer inspection. Semi rigid cables are less prone to breakage and deformation, and it is easy to inspect hard to get places. 4. IP67 WATERPROOF: The USB WiFi endoscope comes with 6 LEDs for clear visibility in dark environments. The waterproof design of the probe can detect wet or underwater areas. 5. WIRELESS CONNECTION: WiFi connection with high compatibility for Android and for iOS phones, easy to connect and easier to observe. Specification: Item Type: USB WiFi Endoscope Material: ABS Resolution: 720P Lens Diameter: Approx. 8mm/0.31in Waterproof Rating: IP67 Focal Length: Approx. 4cm/1.6in. Package List: 1 x Endoscope1 x Instruction Manual 4 x Accessories Note: Manual measurement please allow some error.