The Fluval SEA Marine Spectrum LED is designed for hobbyists who want to maintain a thriving saltwater aquarium. Featuring free FluvalSmart App technology, the light offers a variety of customizable options controlled via Bluetooth on your mobile device. Key Features : Programmable, gradual 24-hour light cycle settings (sunrise, mid day, sunset and night) 7 unique band waves for full spectrum results Independent color control Optional pre-set habitat light configurations (Sunny Reef, Deep Sea Glo, Color Burst) The new generation of H.T.E (High Thermal Efficiency) LEDs function at a higher operating temperature, providing improved long-term light output and spectral performance. Fully encased aluminum shell provides effective heat transfer and improved protection from water intrusion and humidity 50% lighter, smoother frame than previous generation 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 Wider coverage - each individual LED casts 120� of illumination for wider, uniform lighting without dead spots