SUNTech LED 192w Full Spectrum COB Plant Grow Light for Indoor Plant & Veg 2015 Revolutionary heat dissipation design. No overheat problem. Provide the best color ratio spectrum in the market 192W COB ; Lifespan: 50,000 Hours Size: 6.7" x 6.7" x 3.2" Light Spectrum:660nm:630nm:530nm:440nm:460nm:470nm:740nm