White and Comfortable at Ease! The BT Cool Easy bleaching system is equipped with the latest LED blue light technology, delivering more effective, comfortable and reliable in-office whitening without producing heat and noise. Instant whitening with advanced LED blue light technology for more comfortable operation without heat and noise Wide scope and arc-shaped lighting zone allows complete full-mouth whitening Preset timer modes: 5, 10, 15, 20 and 25 minutes Built-in memory automatically retains previous setting Ergonomics design with an adjustable swivel arm and mobile wheels