Auto Sensor Design - Use the auto-sensor, it would turn on or off automatically when you put hand/foot in or out.The light is similar to sunlight, covering the light waves required by UV phototherapy glue, extension glue and LED nail glue. It is a professional UV LED lamp that no need to change any bulbs!Intelligent infrared sensor, the nail lamp can be started automatically without pressing a button. , The UV / LED nail lamp turns on / off automatically when you turn on / off by hand.With 30s, 60s, 90s time setting you can choose the duration for different nail gel. You can easily control the time you want to dry your nails.The 99s setting is a painless low heat mode, the brightness of the low intensity LED light stays low and dries gently, providing the customer with a good experience that is suitable for most people.The light of the nail lamp simulates natural light, is fully functional, efficient, does not harm the eyes or the skin, is easy to transport and helps you to enjoy the good moments of nail art.Use steps1, Remove dead skin, manicure, polished nail surface2, Brush a layer of base gel3, According to the strength of nail polish, place UV lamp for 30-60 seconds4, Brush a layer of colored gel5, According to the thickness of the nail polish in the UV lamp for 30-60 seconds6, Brush on gel7, According to the strength of the nail polish in the UV lamp for 30-60 seconds