WRGB II Slim LED Light: 3 in 1 RGB leds, APP controllable, 3 colours(Red, Green and Blue) and 2 channels(Overall brightness and Kelvin) adjustable. Chihiros WRGB II Slim Edition is designed for planted aquariums. With built-in controller, you can simulate sunrise and sunset effect, customize spectrum intensity at each time point. No need an external timer installation anymore. This light is designed with a reduced 40-50% brightness performance versus WRGB II. With relatively low power consumption, with a high beam angle and suite aquarium sizes from 30 to 140 cm in length.