The curing lamp is 10-level dimming, timing function, easy to install, used for manicure curing. Features: 2835 SMD light-emitting diode lamp, high intensity and reliability, 20W high power lamp with clip, suitable for USB 5V DC. There are 10-level dimming for you to choose according to your needs in different occasions, so you can adjust the brightness of the light from 10% to 100% through the "+, -" button on the controller. In addition, the 360° flexible gooseneck design and sturdy clip make it easier to adjust the angle and distance between artworks. Timing function. There are 3/9/12 hours for you to set. Each color of light has an individual duration (in HOURS). BLUE stays on for 3 hours, GREEN for 9 hours, RED for 12 hours. You can press the CLOCK button to switch timing modes. Comes with a USB, and can be clipped onto surfaces less than 2.5 inches in height. You can more easily adjust the angle and distance between artworks. Can be widely used in birthday parties, weddings, stage shows, night clubs, bars, gyms, Halloween and Christmas parties, collection decorations, car and motorcycle decorations, etc. Specifications: Material: Plastic Color: Black Type: 2-head, 3-head, 4-head (optional) Package Weight: 2-head: 517g / 18.24ounces 3-head: 676g / 23.85ounces 4-head: 839g / 29.59ounces Package Size: 2-head: 374.9 * 135.9 * 84.1mm / 14.76 * 5.35 * 3.31in 3-head: 374.9 * 135.9 * 80mm / 14.76 * 5.35 * 3.15in 4-head: 374.9 * 135.9 * 83.1mm / 14.76 * 5.35 * 3.27in Packing List: 1 * Curing Lamp 1 * User Manual