1.Super silent. 2.Energy saving. 3.Large output & high lift. 4.Double control. The flow rate can be controlled by controller and mobile app.(NOTE: app in Chinese language only) 5.Submersible and inline double use. 6.With feed mode. 7.DC voltage. 230v-240v countries. We supply with Australian plug top 8. 5 gear flow rate adjustable. Multi-function intelligent control panel, adjustable flow and power Super silence, both in fresh and sea water Multi-function intelligent control panel, adjustable flow and power Super silence, both in fresh and sea water SUBMERSIBLE or EXTERNAL: Suitable for AMPHIBIOUS USE, can operate in Marine and Fresh Water Make sure to POUR WATER into the pump before EXTERNAL USE SMART CONTROLLER: 99 Adjustable Speed & 10 min pause feed mode; memory function can keep the same setting after every restart Brand New and high quality. � Safe DC 24V for better use. � Ceramic rotor, low resistance, noise reduction. � Suitable for sea and freshwater use, amphibious. � Frequency conversion, power and flow adjustable