... saving more than 50% compared with fluorescent ex-proof lamp. *Explosion proof housing for security required area. *Auto recharged lithium ... even light distribution and high uniformity, no glare to eyes. *Good color rendering, vivid colors under our LED lamp. *Patented LED package ... for solar power and other applications. Mining Tunnel LED Explosion Proof Light 25W (3 Year Warranty, TUV, CE, RoHS)