As an international professional nail supplies manufacturer with rich experience in the field, Unique company has been working with hundreds of clients from US, UK, France, Italy, Germany and other 60+ major countries. Most of them are Amazon sellers, wholesalers, distributors or nail art training schools.U2 nail dryer was designed for all kinds of gel polishes only, not for regular nail polish. Ensure that your polish is compatible before using the dryer;Infrared sensor will automatically start when hands in and out;Please select the appropriate timer(30/60/120s) as your gel polish's requirement. The dryer will automatically shut off after reaching the specified time. Or use the auto-sensor, it would turn on or off automatically when you put hand/foot in and out;You can place the nail lamp on your hands while you work. The bottom can be easily applied to the foot.This LED nail lamp generate daylight non-ultraviolet white light safe for eyes. Say goodbye to outdated single UV lamps causing troubles with blackened hands and no harm for our eyes.