KRexpress 360 Jellyfish Aquarium Kit with LED Lighting Simulation of submarine jellyfish cruising, LED is riotous with colour light effects, vivid, visual effect is very good The back of the background paper is also simulated underwater world pictures, to increase the ornamental Night effect more obvious, more realistic to give people the feeling of immersive Humanized design, automatic break mode, start running four hours after the power will be shut down to save power Easy to use, available battery can also be used USB interface(batteries are not included)