A USB power cable is provided along with this water cooler for the aquarium, allowing the product to operate at dc 5v or 0.3w of direct power supply. It is highly portable and can easily be adjusted with the fish aquarium wall due to its clamp mounting bracket mouth on the top of this device. The super-fast fan is protected under a plastic net which prevents your hands from hurting or causing any inconvenience during its working. It runs between 220v to 240v of power supply which can be used anywhere anytime worldwide. The cable is in form of a USB cable with a power adapter. It has a power of 0.5w which is reasonable and does not use too much electricity. It can cool the water to an extent ranging from at least 3 ℃.