ULTRA SILENT submersible circulation pump suitable for use in salt or freshwater aquaria. Rugged pump housing. Power-saving DC motor 24 Volt. Polished ceramic shaft and bearings for quiet operation and low maintenance. Submerged use only. Including pre-filter basket. DC Runner 600: Output approximately 600 L/H. Maximum Head 1.7mtrs. Max Power 8w. L 87 x W 43 x H 58 mm. Hose fitting pressure side 13 mm. 2 year warranty.