OLM9550 LED——Mobile Surgical Light Performance Light head shell is made from aluminum alloy, which has outstanding heat dissipation capability, extending the life of the LED bulb and increasing the illumination efficiency. Quality Detachable and sterilizable handle made from PSU Poly sulfone, auto-cleavable up to 135℃. Safety Individual power supply and battery back-up status indication panel. Precise Multi-lens structure with patented focus technology, delivering the light spot diameter up to 200mm and the light depth up to 1,400mm. Durable Long life expectancy LED bulb has a service life up to 70,000 hours, providing the high reliability and low power consumption, minimizing the impact on the environment. Convenience Stable cart system with castors lock function, built-in charger adapter.