This smart Lighted mirror with long-pressing for 3s to adjust brightness stepless. An innovative smart defogger with 1-hour delayed Shut-off keeps the glass fog-free all the time. This high-quality mirror has a 50,000-hour LED lifetime. The waterproof and moisture-proof backing ensures safe lighting in wet bathroom environments. Note: The defogging function may take 5-10 minutes to completely cover/clear the entire bathroom mirror. Please turn on this function before you use it.