This is lightweight, small size, high efficiency, low consumption and low noise water pump.It has been used widely, in household include cooking, cleaning, bathing, space heating and water flowers, etc.Note: Please do not test long time with no-load, inside is with plastic leaves, can't suction impurity.Feature:self-priming pumpOptimal For Voltage: 6VSpecification：Working Voltage: 4v-12VWorking Current: 0.8AMotor Diameter: 27mmWater Pump lenght: 52mmDrain Hole: 4mmWeight:147gPart List:1 x water pump