Input voltage:AC100-240V Power:40W Wavelength:460-490nm Illumination Density:200-300mW/cm² Amount of LED tube:8pcs Dimension of appearance(L*W*H):120*21*34cm G.W:8.5kg Size:66*45*18cm 1. Chair-mounted type to save space 2. Advanced operation interface, with great convenience and facility. 3. Multi-Security design, guarantee the safety of patients and doctors. 4. Totally 8 blue LED lights, supplying plenitudinous cold light luminescence.