ETL Listed Full Spectrum Grow LED. Cree LEDs, CE, EL, Rohs listed. Spectrum King LED Grow Lights are made in the USA. 120-277 V. Full Spectrum designed to mimic natural sunlight of 380-779 nanometers. Save electricity costs be using only 450 watts to provide 1000W of intensity. Sealed WaterProof Housing. Choice of Reflector Style / Degrees. When you order from Growers House, you can a free pair of Method Seven LED Operator grow room glasses (an $80 value). Simply check the box below as you add the Spectrum King to your cart.