Employs the latest LED technology by emitting blue light source to efficiently convert electricity to light while generating a minimum of heat and fan noise. This provides absolute comfort for patients. Equipped with wide scope and arc-shaped lighting zone where it provides complete, full-mouth whitening and hassle-free operation. Preset timer modes allow you to set up different treatments for 5, 10, 15, 20 and 25 minutes at lease. It also provides better compatibility with most bleaching materials, with built-in memory and adjustable swivel arm and mobile wheels.