... a curing ligh,1-30minutes as a whitening accelerator6 6 light intensities,suitable for more brands tooth whitening gel7 LCD module ... Wavelength: 420nm-490nm4 Light Intensity:6 intensities,maximum >6000 mW/cm25 Adjustable timer:10s,30s,1m, 2m, 5m, 8m, 10m, 15m, 20m ... , 30mPacking dimension:117cm*67cm*15cm Blue light teeth whitening led light