Features: Aluminum alloy shells is stylish and incredibly reliable. Totally 46pcs LEDs: 31pcs 5730 white + 2pcs blue + 1pcs purple + 12pcs 5050 white Energy-efficient and long-lasting LEDs light, promoting vibrant growth of fish and aquatic plants. 5 brightness levels(long press for stepless dimming), 3 lighting mods and3/6/12h timer function. Adjustable metal brackets to fit aquarium tanks from 15in to 21in. You can easily install this fish tanks light on most aquarium tanks. Perfect for freshwater or saltwater fish and medium-high light level plants. This product is recommended for use over glass or acrylic canopy-covered aquariums.