Features [High quality] This self-priming pump uses high quality RS-360SH motor, the maximum lift can reach 1.5 meters. [Scope of application] This aquarium pump is widely used in water cooling systems for aquariums, fish tanks, bonsai, rockery, laptop computers or many experiments. [Input voltage] The input voltage is 3V to 12V DC, and the terminal with a red dot is positive. [Suitable power supply] It is recommended to use a 5V 2A power supply for a long time, such as battery holder or computer USB. [Free adjustment] The direction of rotation can be changed, so the inlet and outlet can be interchanged. Specifications: Rated Voltage: 3V~12VDC Motor Diameter: 27mm / 1.06in Pump Head Diameter: 44mm / 1.73in Length: 60mm / 2.36in Inlet/Outlet Diameter: 4mm / 0.15in Maximum Lift Head: 1.5M / 4.9ft Note: 1, Please do not connect it to 7.5V or higher voltage for a long time. 2, Single dry cell battery, mobile phone charger and other chargers can NOT be used as a power supply. 3, All power supply with a actual current less than 1.5A or actual voltage more than 12V can NOT be used otherwise the pump will not work or might burn out. 4, The pump is not a submersible pump, it can not be put in water. 5, No-load test time should not be too long. 6, Impurities in water should not be suck into the pump, so please make sure water is clean. 7, If pump is stuck, open the front cover and clean. Package Includes: 1 x Mini Pump Package List