Indoor Sunshine: 25 watt Bulbs, Set of Three Balanced Full Spectrum Light 95 CRI 5300 Kelvin  The Closest Match to Natural Sunlight The Closest Match to Natural Sunlight to Support Greater Visual Clarity Energy Efficient (equivalent to 100 wt)Long Life - 10,000 Hours Users report reduced SAD, PMS, PTSD, ADD/ADHD, Autism