Voltage:12V Power:120W Capacity:20US.GPM Max Head:20ft Caliber:1"barb & 3/4"thread Simple structure, less components, easy maintenance and repair. Stable Performance; has less power cost, larger flow, and great anticorrosion ability. Wonderful water pump for all the drainage of shipping, aquaculture,graziery,and industrial & mineral industry. Use with solar panels and 12V battery systems As the first manufacturer to sell this pump, BACOENG has more experience in details. After hearing suggestion from thousands of users, engineers redesigned the connectors to solve the leakage problem due to long-term water infiltration into the motor. Upgraded Stainless Steel Version is exclusively developed by us at the end of 2018. submersible pump Diverse Power Supply During the sunny weather, you can work directly with a solar panel. However, a cloud could lead into the solar panels losing sunlight and consequently cause the pump to halt work.