Description: Fast and Convenient 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. Specifications: 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) Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings.