16 POWERFUL LED BULBS, ADVANCED FEATURESPHOEBE Teeth Whitening Light contains 16-LED bulbs for brighter whitening, compared to low-quality competitor lights with a single bulb, enhance your teeth whitening process faster, make your smile brighter for longer^ NO NEED BATTERIES, ENERGY SAVINGOur Tooth Whitening Light with 3 Adapters for iPhone, Android and USB. You can connect with your phone anywhere, anytime. NO NEED for batteries or additional teeth whitening trays. Energy saving and environmental protection. Compatible with any commercial teeth whitening gel or teeth whitening strips, enhance your teeth whitening process faster.^ SAFE, LONG-LASTING, EFFECTIVE METHOD of TEETH WHITENINGPHOEBE teeth whitening accelerator light treatment applies high-intensity blue light as a catalyst to penetrate an appropriate amount of a whitening agent into the dentin through oxidation to remove the pigment. It's known as a fast, safe, long-lasting and effective method of teeth whitening treatment.^ PORTABLE, EASY to USEJust plug it into your smartphone (iPhone or Android) or USB port and use with your whitening gel. Light is safe for at-home whitening and causes no negative side effects or tooth sensitivity. With a small storage case, whiten your teeth anywhere and anytime^