... saving more than 50% compared with fluorescent ex-proof lamp. *Explosion proof housing for security required area. *Auto recharged lithium battery ... flicker free when working to reduce the eyestrain. *Very even light distribution and high uniformity, no glare to eyes. *Good ... solar power and other applications. Universal Petrol Station 20W LED explosion proof Light (3/5 Year Warranty, TUV, CE, RoHS)