Feature: 1. The 370 water pump is suitable for installation on remote control boats that require water cooling with water‑cooled motors and do not have water‑absorbing rudders. 2. Under the condition of 5V voltage, the water pump still works normally without interruption after 15 hours operation. It's hot but it's in the normal range, which has no impact on future operation. 3. The JR plug can be directly powered by the receiver, which is very convenient to use. 4. It adopts low‑noise design to provide you with a perfect gaming experience. 5. Add a switch between the pump and power supply. When you need pump to work, turn on the switch. When the you need pump to stop working, turn off the switch. Specification: Item Type: RC Boat 370 Water Cooling Pump Material: Aluminum Alloy + Plastic Product Color: As Pictures Shown Pump Length: Approx. 73mm / 2.9in (including 7.8mm / 0.3in length of water inlet/outlet) Outer Diameter of Water Inlet/Outlet: Approx. 3.95mm / 0.2in Motor Outer Diameter: Approx. 24.4mm / 1.0in Outer Diameter of Pump Head: Approx. 28mm / 1.1in Product Weight: Approx. 72g / 2.5oz Pump Voltage: 3-6V Plug: JR Plug Test Data: Voltage: 3 V Pumping Flow: 1.1L/min. ; Pumping Flow: 300ml/min Voltage: 6 V Pumping Flow: 1.8L/min. ; Pumping Flow: 600ml/min Application: For RC Boat, etc,.. Package List: 1 x 370 Water Cooling Pump