The Spectrum King SK400 + Plus LED Grow Light is a high-quality and efficient lighting solution for hydroponic setups. With its LED technology and full spectrum light output, it provides the ideal lighting conditions for plant growth. The unit operates on 120-277V input voltage and comes with a 120V cord, making it a reliable and effective choice for indoor gardening and outdoor hydroponic systems. The Spectrum King brand is known for producing top-notch grow lights, making this unit a trusted option for those looking to enhance their gardening experience.