Introducing the ROI-E680S, an enhanced 2nd generation redesign of the ROI-E680 legacy. Continuing its renowned heritage of proven harvests with optimal light distribution, greater heat management for higher performance, and an upgraded conformal coating resulting in greater resilience to chemical contaminants. FEATURESBalanced spectrum, Incorporating Growers Choice famous 3K Full Phase Spectrum for superior growing power with the best LED diodes available. HIGH PERFORMANCETotal Output: 1770 umol/sSystem Efficacy: 2.6 umol/J ENERGY-SAVING AND EA