Features: The World's First LED Teeth Whitening Kit with Automatic disinfection function. All you need to do is pop in the lid, and allow the system to start working. It automatically cleans itself in only 3 minutes, and when it's done, will turn off by itself. Full wrapped in design:16pcs blue light(whitening) + 8pcs red light(soothing). With 10 minutes a day of consistent use, you can flash those stain-free pearly whites confidently in just a few days. Small enough to hold in on hand. Weighs only about 80g. One piece design.Built-in battery and battery life up to 160minutes 10minutes/day10 days as a cycle. One charge covers the entire cycle. Three tooth whitening agents come with Kavvo Shell. Specifications: Item: KAVVO Shell Teeth Whitening Kit Main Material: White Material: ABS Battery: 3.7V 450mah Package Size: 16.3*10.9*7cm Package Weight: 343g Package List: 1* Teeth Whitening Kit 3* Tooth Whitening Agents