... Competitive price 4.Lifespan:50000hours led lightDetail Description of led light:Model No.:HPE-4*1W-E271. Output power: 4 Watt ... Hour> 50,000 hoursRelevant Certificate CE, RoHS,Warranty 2 years Optical Data :Light Color Warm White, Neutral White, Cool White,R,G ... lighting, office work station 3. Back lighting, step lighting, light boxes 4. Merchandising, exhibition stands, and panels Our service:1 ...