Zeroyoyo AC 220V 50Hz 3W Plastic Mini 3in1 Aquarium Internal Filter Fish Tank Water Submersible Pump Spray Bar (Black), US Plug Voltage: AC220V 50Hz 3W Energy saving, quiet, safe and reliable 3-in-1 power filter performs three functions at the same time: water filtration, water circulation and aeration. Sponge filter media is re-used by cleaned regular. Replacement is necessary when the sponge changed its figure. Plug: US Plug