Uses the most advanced international LED as light source Environmental protection at low power consumption, with long-life LED bulbs of service life of more than 30,000 hours LED light has no infrared and ultraviolet radiation Background illumination bulb is included, flexibly supplying the auxiliary light source for laparoscopic operations Streamlined ultra-thin design with less air resistance to facilitate the arrival of purified air to operation wound Digital control by double-CPU micro-computer, with 10-grade brightness options and automatic memory High-performance balance bodies / arms manufactured in Germany Sterilizable handle, which is detachable for disinfection and sterilization after operations Alarm indicator, which clearly reminds doctors when one or several groups of LED bulbs are not functioning