Features 1. High power LED,purely dental blue light 2. Digital display, adjustable work time 3. Multiple working modules: high power, pulse, soft up 4. High capacity rechargeable Li-ion battery ,low battery detection 5. Low-power,long standby time 6. Over-temperature protection Technical Adaptor working voltage:AC100-240V, 50-60HZ Wavelength: 420nm-480nm Light power:1200mw/sq.cm