Heat vent design: Overheating protection, the internal heat is removed in time, the heat is reduced, the circuit is protected, and the machine's service life is extended. 57 LED dual light source, soft baking glue dual light source to prevent black hands; no eye damage; can be used for hands and feet. Soft red light. Freezing is not a bad hand. Non-ultraviolet light when working, LED fluorescent beads effectively filter out black hand light waves; say goodbye to the trouble of black hands and glare caused by ultraviolet lamps. 5S quick-drying can be put on both hands, 4-speed timer intelligently displays baking time, high-power baking glue does not need to wait for a long time, allowing you to save time with one hand. Effective prevention of black hand problems 10S/30S/60S/99S/timing glue, multi-speed synchronization. Red luminous beads, no black needles. Best DIY Gift: This practical nail dryer is not only easy to use but also beautiful, it is a good gift choice for female friends, you can give it to your girlfriend, sister, mother, or wife for a birthday, Christmas Day, or Valentine's Day, everyone will love it.