Features: The water pump is only suitable for water circulation, not for water pressurization, submersible installation (only for cold water) completely waterproof. Motor stator circuit board part of the epoxy resin potting completely isolated with the rotors to solve the long-term submersible diving water pump problems, can be installed underwater completely waterproof. The pump adopts high performances ceramics shafts, high precisions, good shock resistance. Built-in DCbrushless motor run smoothly, no electric spark, low noise long service life. Because the pump adopts the ceramics sleeve the ceramics shafts precisions cooperation, the noise is lower than 35 decibels, the power smaller even can reach 30 decibels,almost mutes effect. Application: Water circulation system, refrigeration system, solar thermally system, pipe circulation for water heater, water dispenser, floor heating, fountains, etc. Specifications: Material: PlasticandMetal Size: Approx. 9x6cm\/3.54x2.36inch Voltage:12VDC Fluid Temperature:0 - 110 Usage Time:more than 40,000hours Current: 0.7A Inlets\/Outlet: 1\/2\