Feature 1LARGE 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. 2ENGINE 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. 3SUPERIOR 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. 4IP67 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. 5WIRELESS CONNECTION: WiFi connection with high compatibility for Android and for iOS phones, easy to connect and easier to observe.Item Type:USBWiFiEndoscopeMaterial: ABSResolution: 720PLens Diameter: Approx. 8mm/0.31inWaterproof Rating: IP67Focal Length: Approx. 4cm/1.6in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Endoscope1 x Instruction Manual4 x AccessoriesNoteManual measurement please allow some error.