The Oase biOrb Replacement DC MCR Light is a unique LED system designed to create amazing light effects in your biOrb aquarium. With the included remote control, you can select from 16 different color settings and adjust intensity levels. This light unit can also simulate the light of day or night, with programmable cycles of 8, 10, 12, or 14 hours. It serves as a direct replacement for existing MCR lights. Please note: This newer DC MCR light is only compatible with biOrb DC transformers (73114) and will NOT work with older AC transformers. Transformer is not included. This MCR Light is compatible with the following black-trimmed biOrb aquariums with a white DC transformer (# 73114): biOrb CUBE 30, LIFE 15, LOOP 15 and 30, TUBE 15 and 35, and all biOrb CLASSIC aquarium sizes. Included in the MCR Lights: MCR Light unit, plastic hood tray, and remote control.