Enjoy a brighter smile with this Rio Smile White Advanced Blue-Light Teeth Whitening Kit. This kit uses the very latest advanced whitening gel and blue light activation technology to gently lift and clean away stains causes by coffee, tea, wine, smoking, food or even ageing. Studies have shown that people with whiter teeth are perceived as being younger, healthier and more successful. Now, you can whiten your teeth in just 15 minutes, all from the comfort of your own home! No batteries are required, simply plug into a USB output or any smart phone - now that's something to smile about! The kit includes the battery free high output LED blue-light mouth piece, an Advanced Whitening Pre-Treatment Spray (4.5ml) and the Advanced Whitening Gel (30ml) which is enough for 20 whitening treatments. Digitial Display: N Electric: N Rchargeable: N Sensitive: N Whitening: Y World Wide Voltage: Y For a brighter, whiter smile Striking results Advanced blue light technology Treatment time 15 minutes Enough gel for 20 treatments 16 Bright Blue LED Lights Brilliantly white teeth Quick, simple and easy to use USB power supply