... System can convert electric energy into strong blue light. The cool blue light activates the dental whitening gel and oxidizes the ... tubes in the shortest time, discoloring the teeth to sparkling white both externally and internally. The 30-minute process ... 60Hz7. Output power: 12V DC, 2.2A8. Whats included: Cool Light System, Main Poles, Transformer , Machine Base Instruction Manual, Mouthguard, ...