Product Specification: Three-stage power output selection, users can select a different power according to the patient's condition. Work time counting function, comes with electronic lock, work time could clear by that lock for user. Enclosed disposable sheath, prevent cross-infection, clean and convenient, let patient feel relieved. Broad Spectrum: 430nm-490nm (Blue Light) 620nm-640nm(Red Light) 380nm-400nm(Purple Light) Voltage: AC: 100V-240V Light source: 4-5W/pc (Blue Light) 2-3W/pc (Red Light) 1W/pc (Purple Light) Gross Weight: 9.3kgs Packing size: 70*47*22CM Total Arm Length: 90cm Total Height: 120cm Distance between Teeth and Illuminator (mm) Uniformity 10mm over 95% 20mm over 90% 30mm over 85% 40mm over 80% 50mm over 75% Accessories: Power Cord: 1pc (length: 2m) Goggle: 2 pairs Sheath: 20 Pcs Mouth Retractor: 1pc User Manual: 1pc