Two groups of the LED lamps, 4 for the upper, 4 for the below; total 8 lights
 Optional output light model: A: upper light, B: below Lights, AB: both of the two groups.
 Output power can choose from 40% to 100%
 Optional whitening time: 10 to 40 mins.
Dental led bleaching system and whitening light lamp accelerator teeth
The wavelength of blue light: 460-490 nm