Full Spectrum: The fish tank light contains 6500 K white light, 450 nm blue light and 660 nm red light. LUX: 2500; PAR: 55; CRI: 90. The vivid lights can reproduce the real colors of objects to relieve the visual fatigue, and thus improve the comfort of the environment. 2 Lighting Modes: Short press the M button repeatedly on the fish tank light to switch between daytime and night modes. Hold the M button for 3 seconds to turn all lights off. Simulate natural sunrise and sunset to energize your fish and give them a sound sleep. 6 Intensity Levels: Daytime Mode (all lights are on): Press the D button to control the brightness of white and red lights and press the N button to control that of the blue light. Night Mode (only blue light is on): Press the N button to adjust the luminance. Auto On/Off: With a built- in timer, the submersible aquarium tube light provides 3 optional lighting durations: 8 h, 10 h and 12 h (Only work during the first 8, 10 or 12 hours within 24 hours). Perfect for creating a natural environment. For 18 to 24 Tanks: With an extendable bracket (min length: up to 18 ; max length: up to 32 ), the LED aquarium light always stays steady on the fish tank. Work best on tanks of 18 to 24 inches long. Color Basic with Timer Shape Rectangular Brand Name Pawfly Style Name Modern Unit Count 1.0 Count Finish Types Powder Coated Black Manufacturer Pawfly Model Number AL-2511 Power Source Corded Electric Material Type Aluminum Mounting Type Table Mount Item Type Name Aquarium LED Light Light Source Type LED Included Components LED Light Light Source Wattage 14 Watts Batteries are Included No Number of Light Sources 1 Item Dimensions L x W x H 17.81 L x 3.2 W x 3 H Light Source Special Features Adjustable Brightness, Multiple Lighting Modes, Timer Function Manufacturer Warranty Description 1 year.