System Two cool-white light MH metal halide High Intensity Discharge (HID) lighting provides superior surgery lighting compared to the more traditional halogen surgery lighting. The primary bulb is rated for 10,000 hour life, and at a one-meter distance it provides 9,500 ft candles or 102,000 lux with 4,300 º Kelvin color temperature. User can adjust the light pattern from 6.5-9". Mechanical dimming is 50-100% and all key points offer a 360 º rotation. The sturdy ceiling casting provides balance and stability. The backup bulb automatically switches over if the primary fails. The curved facial lens design is distinctive. Several configuration options available.