System Two cool-white light MH metal halide High Intensity Discharge (HID) lighting provides superior surgery lighting compared to traditional halogen lighting. The primary bulb is rated for a 10,000 hour life.At 1-meter distance it offers 9,500 ft candles or 102,000 lux with 4,300 º Kelvin color temperature and it’s energy efficient at 39 watts. Mechanical dimming is 50% to 100% and all key points offer a 360 º rotation. The backup bulb automatically switches over if the primary fails. You can remove the hand for sterilization, the curved facial lens design is distinctive. Configuration options available.