Five operating modes: tricolor masthead light 135° white, 112.5° red, 112.5° green, stern light 135°, bicolor light 112.5° red and 112.5° green, green light 112.5°, red light 112.5°. Depending on the selected lighting mode, you will have a battery life between 15 and 72 hours, all powered by three standard AAA batteries (not included). Dimensions 68x35h-90 mm depending on the model.