Material: Plastic, Silicone, Gel, Light Transmitter Size: 6 x 5.5 x 3cm/2.36 x 2.16 x 1.18inch (L x W x H) Design: This is synergistic approach used in this system that gives you the lastest tooth whitening methodology that can be used un the convenience of your own home Feature: Dental Science has come a long way in providing the tools for us to keep our mounths and smile in fine comdition. The lastest procedures give us light technology. This is the use of safe, simple LED light added to whitening gel. Occasion: Home, Travel, Hotel, Camping, etc. More notes , pls check Specifications detail Package Content: 1 x Light Transmitter;1 x CR2025 Lithium Battery;1 x Gel A;1 x Gel B;2 x Dental Tray;1 x Instruction Manual