1、[Brightness Adjustment] 10 levels of brightness adjustment, you can adjust the brightness of the LED aquarium light from 10% to 100%, the light will not cause damage to the fish, there is no stroboscopic blue hazard, and it also protects our eyes. 2、[Timing Function] Control box has three timing functions. It has three options of 6H, 10H and 12H. You can specify the lighting time according to your needs. When you go out, you do not have to worry about your fish not being illuminated. At the same time, it can be very Good for you to save electricity bills. 3、[Package Design] Aluminum alloy metal shell, good heat dissipation effect, double sided potting can be more perfect waterproof (not directly immersed in water), better and more effective protection of the lamp beads, prolong the service life, the use time is up to 100000H. 4、[LED Lamp Beads] 2835 model lamp beads are used, with uniform light emission, no glare, no ultraviolet rays, and the brightness is 50% higher than ordinary lamp beads, and it is environmentally friendly and pollution free. 5、[Telescopic Bracket] Retractable adjustable bracket is suitable for fish tanks of various length specifications, suitable for fish tanks between 30‑45cm/18‑17.7in in length. 1 x Light Board1 x Plug2 x Bracket1 x Manual  Item Type: LED Aquarium LightColor: As Pictures ShownPower: 6WLife: 100000HMaterial: Aluminum Alloy+PCWeight: Approx.433g/ 15.3ozApplicable Fish Tank: 30-45cm/ 11.8- 17.7inLight Source: RGBW (Red, Green, Blue and White)Size: Lamp Board Length: Approx. 25.6cm/ 10.1in, Width: Approx. 8cm/ 3.1in (measurement Without Iron Bracket)