2 in 1 Micro USB & USB Endoscope Waterproof Snake Tube Inspection Camera with 6 LED for OTG Android Phone, Lens Diameter: 7mm Length: 1.5m 1. High resolution 640x480, 1280x720, 1600x1200 2. Waterproof wire endoscope, waterproof level: IP67 3. Use optoelectronic technology to investigate hard-to-reach area 4. It helps you to diagnose broken part, weld point and machine equipment to save time and increase productivity 5. It has built-in 6 LED lights (with brightness control) on camera head to illuminate the inspection area 6. Camera head outer diameter: 9.0mm. Focal distance: 4-6cm or 6cm-infinite 7. Compatible with Android OTG phone which has OTG and UVC function 8. Ideal for introral, 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.