Johnson Pump Ultima Automatic Pump offers the latest in automatic bilge pump technology. Integration of the patented Ultima "field effect" sensing technology into the bilge pump body creates a sleek, compact, reliable bilge pump that's ready to install and run for years of unerring service. Pump has no exposed sensors, which eliminates corrosion possibilities. This 600 GPH pump has easy-to-install DuraPort discharge ports to eliminate stress cracking caused by overtightened hose clamps. Comes with both a straight and 90° smooth elbow port. Open Flow: 600 GPH. Amp Draw: 2.5. Hose Size: 3/4". 12V DC. Pump measures 6"L x 3.2"W x 4.1"H.