Product descriptionSize: total length 32cmColour: BlackMaterial: ABSPackage content: 1pcs fish tank aquarium light1.3 LIGHTING MODES: The white, the bule or the white & blue light brings out the color of everything in tank,creates a wonderful aquascape.2.BUILT-IN TIMER: fish tank clip on light has built-in timer it will come on and go off at the same time every day and light up for 6 hours,10 hours or 12 hours.3.BUILT-IN DIMMER: Don't worry about over bright issue, you can adjust the brightness with the built-in dimmer for each white light and blue light.4.WIDE MOUNT CLIP WITH GOOSENECK: Aquarium clip on light with 0.98 inch wide clip fit for all most fish tank wall, Soft gooseneck can be adjusted by any angles and positions.5.GOOD FOR PLANT & FISH: Ultra-bright White LEDs and rich blue light are sufficient to grow your plant thriving.It also lights your fish in a way that really changes their color to stand out.