LE 55W LED High Bay Light, Super Bright Commercial Lighting, 150W MH Bulbs Equivalent, 4800lm, Waterproof, Daylight White Save electricity bill. Replace 150W MH (Metal Halide) bulb by 55W LED. Save over 50% on electricity bill of lighting. High efficiency. Output is over 4800lm. Efficiency is over 85lm/w Maintenance Free. Extremely long life reduces re-lamp frequency. Save labor cost to replace bulbs with short lifespan. Instant full light. The starting time is less than 0.5 s, no need to wait for warming up the lamp Waterproof. IP65