High Power LED, Purely Dental blue light. High articulation optical fiber. Digital display, clear and intuitive operation. Three working modes, strong, gradually strong, flashing. Optional working time: 5 sec, 10 sec, 15 sec, 20 sec. Automatic inactive automatic power off. Low battery detection. Removable large capacity li-ion battery. Soft pushbutton, nice feel. Ideal use in Dental Clinics. Light Power more than 1200mw/cm2. Wavelength 420~480nm.  Power Input AC 100-240V, 50/60Hz