Features: Teeth whitening strip designed to fit the engineering shape of the upper and lower tooth rows. Effective whitening teeth increase confidence more beautiful. This professional strength whitening brush-up wipe allows for a thin application of whitening gel. The active oxygen bubbles instantly begin to remove stains. With a tooth whitening contrast card in side easy to witness tooth whitening process at home. Specifications: Item Type: Dental Set Function: Teeth Whitening Dental Tray Material: Silica Gel Power Type: Battery (2 * CR2032 Button batteries) Package Size: 23 * 16 * 2.5cm / 9.1 * 6.3 * 0.98in Package Weigh: 110g / 3.87oz Package List: 10 * Whitening Gel(3ml per) 1 * Tooth Whitening System (Batteries Included) 2 * Dental Tray 1 * Teeth Shade Guide 7 * Tube Head