Product Parameters: 1. Working voltage: 220V 2. Power: 3W 3. Head: 0.45 m / 17.72 in 4. Head amount: 180L / H 5. Frequency: 50Hz / 60Hz 6. Product size: about 3.6 * 3.6 * 2.8 cm / 1.42 * 1.42 * 1.10 in Outlet: inner diameter: about 0.6 cm / 0.24 in outer diameter: about 0.8 cm / 0.31 in 7. Power cable length: about 1.5 m / 59.06 in 8. Spout height: about 1 cm / 0.39 in 9.Package includes: 1*Water Pump Pump Knowledge Popularization of Science: 1. Head: Head refers to that the height that the water can be pumped when outlet connect tube to straighten vertically; head 1.2 meters refers to the length of tube straighten is less than 1.2 meters, the distance of watering from the pump outlet to the most high-end tube, assuming that if your rockery needs to draw water to 0.8 m height, then this is appropriate, it's not appropriate above 1.2 m. 2. Pump speed: Because of the impact of the incrustation, the pump may become slower after operating after 3-4 months; if this situation happened, you do not worry, because our pump is detachable, you just need to remove the head, the rotor can be cleaned. 3. Pump does not work: the simplest way to determine the pump does not work is touching the pump with your hand, if the pump is still jitter, you need to clean up much dirt on the rotor How to use: 1. Put the pump into the water flatly, the height of water need to immerse water pump in case of burning the water or machine. It can work when the power-on (the pump need not a transformer). 2. If there is breakdown in the process of using, please cut off the power as soon as possible, it can overhaul without the water. Maintenance: water pump is prohibited to dry-braise without water, long-term use will lead to power is not enough or can not work, you should clean the shaft in time(the pump can be demolished to clean) Warm Tip: If the cable is broken, please stop using. Suitable for: aquarium, pond, fountain, rockery waterfalls, miniature small fountain, all kinds of crafts, air-conditioning fan, DIY aquarium and other fountain decoration.