The function of headlight surgical operating led headlight hospital instrument Lighting is provided by high quality and long life light source. High definition radiation light spot. Power supply and charging by wide voltage(AC-90V-240V) After charging, it can be used for 4 hours continuously. The weight of the lamp bulb is only 80g. Technical Specifications Voltage: 90V-240V 50Hz-60Hz Color Temp:6000k±500ksmn;500ksmn;500k bulb power: 3W Input power: ≤5We;5We;5W Charging time:5 hours Power on time:4 hours Operating Environment Nvironment Temperature:-10ºC to 40ºCo 40ºCrdm;Co 40ºC Relative Humidity:≤75%;75%;75% Atmosphere pressure:86 kPa to 106 kPa Products List Headlight 1 piece A-3 Power Supply 1 piece power cable 1 piece