Simple To Use Easy to maintain Convenient to carry Whitens in just 10 minutes Perfect for use before some big days 2 button batteries, sustainable work for 48 hours White Light system offers results in as little as 10 minutes. Using light activated chemical technology, the clinically tested Enjoy a brighter, whiter smile with the White Light fast teeth whitening system. The powerful and safe whitening gel contains peroxide - the same enamel-safe ingredient used by dentists. White Light targets and removes tough stains, and provides long lasting results. Fast and easy to use, it can be used conveniently at home. Power supply: 2 button batteries (included) Rated voltage: 6V Blue wavelength: 460 ~ 470nM Function: whitening Voltage: DC6V LED lights: 1 star Blue light intensity: 400-600 mcs Blue wavelength: 460-465 nm Product color: blue Light color:blue Package Included: 1 x Teeth Whitening Light (with button battery)