Operated exclusively via the FluvalSmart App on your mobile device, Aquasky allows you to control the light output of red, green blue and super bright 6500K white LEDs for infinite color blends. Programmable, gradual 24-hour light cycle settings (sunrise, midday, sunset and night) Adjustable color spectrum with RGB + W output control Multiple weather effects - from stormy lightning to dense cloud cover, recreate seasonal systems from the world's great fish habitats Industry leading IP67 waterproof rating - light can be mounted directly above water surface for greater light penetration Larger Touch-Switch surface and design offers stable control without any fuss Deep coverage - each individual LED casts 120° of illumination for wider, uniform lighting without dead spots Extendable mounting brackets allow easy installation on a variety of aquarium widths German-engineered For freshwater and saltwater fish aquariums and plant or coral aquariums requiring very low light levels TECH SPECS German-engineered For freshwater and saltwater fish aquariums and plant or coral aquariums requiring very low light levels TECH SPECS Extendable range: 91-122 CM (36-48 IN) Number of LEDs: 63 Wattage: 27 W Lumens: 1,850 LM Kelvin Temperature: 3,000-25,000K Lifetime hours: 50,000