The Rio Professional Teeth Whitening System uses advanced blue light treatment technology to give professional results in the comfort of your own home. It features adjustable power levels and treatment modes, including a quick top up option. This professional unit offers a high performance solution with the benefit of a supported mouth piece for added comfort. The specially formulated whitening gel combined with the blue light technology works rapidly to remove surface and embedded tooth stains. Ideal for stains caused by tea, coffee, red wine and discolouration due to smoking. For a brighter, whiter smile. Contents: professional teeth whitening unit, 5 x teeth whitening gel, 3 x teeth whitening mouth pieces, safety key. Features: 20 minute timer. 20 minute usage time. General information: For ages 14 years and over. Manufacturers 2 year guarantee.