1. Germany imported Osram LED medical light source is adopted II LED Touch pad control system is developed for adjustment control of power switch, brightness switch, illumination level, color temperature, sopt size,color rendering index, to meet medical personnel requirement of variant operation. 2.Cold infrared-free light In comparison to conventional halogen and gas discharge lamps, the "cold" II LED light allowing for fatigue-free operating and prevents tissue from drying out in the operation field at the head area of the surgeon.