Introducing the ROI-E680 Horticulture LED System by Growers Choice. An inspired collaboration between two of the most respected lighting companies in the horticulture industry. TSL Horti Tech and Grower’s Choice have joined forces with years of innovative experience to create this high performance and cost-effective lighting solution for commercial and home horticulture.680W power draw2.6 umol/j efficacy1770 umol/s total light output4x4 to 5x5 coverage areaGC-3k Full Spectrum with 660nm deep red (Osram diodes)Onboard dimming function (100%