Product Feature: High efficiency wall conjoined sliding structural design, adjust angle freely and convenient to use. A multi-functional high-sensitivity 5-inch touch electronic display, easy operation Four light source output selection: blue, red, blue + red + purple, blue + purple Three-stage power output selection, users can select a different power according to the patient's condition The user can select needed time according to desired treatment, time adjustment range from 1 to 30 minutes. Work time counting function, comes with electronic lock, work time could clear by that lock for user. In the case of not working, the machine will go to sleep automatically after 60 seconds Enclosed disposable sheath, prevent cross-infection, clean and convenient, let patient feel relieved. Product Specification: 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: 5kgs Total Arm Length: 90cm Total Height: 120cm