Features1. 100% and 2. High resolution 640*480, 1280*720, 1600*12003. Waterproof wire endoscope, waterproof level: IP674. Use optoelectronic technology to investigate hard-to-reach area5. It helps you to diagnose broken part, weld point and machine equipment to save time and increase productivity6. It has built-in 6 LED lights (with brightness control) on camera head to illuminate the inspection area7. Camera head outer diameter: 7.0mm. Focal distance: 4-6cm or 6cm-infinite8. Compatible with Android phone has OTG and UVC function9. Ideal for intraoral, underwater camera system,motor vehicle detector, sewer pipeline detector, search and rescue, criminal and custom detector, archaeological detect, the PCB detection, home care, aviation and space industries, care and tractors industries, petroleum drilling industries, constructions and so on.Compatible With Phones1. Please make sure your Android phone supports OTG functionality. 2. Not support iOS phone and ipad. 3. Support OPPO R series mobile phones, expect R series mobile phones are not supported 4. Support Samsung Galaxy Note 2 / 3 / 4 / 5, S5 / S6 / S7, i9500, i9308 5. Below S4 and galaxy A5, SCH-P729 are not supported 6. Support Xiaomi MI3 above, Xiaomi Tablet, Xiaomi Redmi 2 above 7. Below MI3 and redmi 2 are are not supported 8. Support other brand phones: vivo MAXL, Meizu X4 or above, Sony Z1 and above, ZTE Red Bull V5