Waterproof Function: Water cooling pump is in waterproof design, and it can works even in water,at the same time, it has a long service life. Long Work Time: The JR plug is suitable for insertion into the receiver. At 5V, the pump will still operate normally after 15 hours of operation without interruption. Great Performance: It's hot it's in the normal range, which has no impact on operation Low Noise: The low noise design gives you the perfect game playing experience. Use range: The silent 370 water pump is suitable for installation on a remotely controlled boat that requires water cooling for the water-cooled motor and does not have a suction rudder. The pumping voltage of the 370 motor is 3-6V, which can be directly plugged into the receiver for power. 6S (7-28V) battery 5V feed pump. Suitable for remotely controlled carriers, warships, battleships and other trains that require water cooling for electric motors and ESCs. Switch: Add a switch between the pump and the power supply. When the pump needs to work, turn on the switch. When you need to turn off the pump, turn off the switch. Water pump working :After actual testing, the water pump works continuously for 15 hours under the condition of 5V voltage, and the pump will work normally. The temperature will be hot, it is in the normal range and will not affect the use. other instructions:Pump head outlet diameter: 3.95mm, center hole is water outlet out, eccentric hole is water inlet in. Use voltage: rated 6V, use 3-6V Voltage: 3 V Pumping flow: 1.1L / one Pumping flow: 300ml / one Voltage: 6 V Pumping flow: 1.8L / one Pumping flow: 600ml / one Pump size: including pump head outlet length 72mm, motor outer diameter 24.4mm, pump head outer diameter 28mm Pump length: 7m (including7.8mm inlet and outlet lengths) Outer diameter of water inlet and outlet: 3.95mm Tool Supplies:Assembled class Technical parameters:Value 2 Model Number:RC Toys Parts Remote Control Peripherals/Devices:Remote Controller For Vehicle Type: Four-wheel Drive :Assemblage Wheelbase:Screws colour:Metallic Material:metal size:About 5 x 3.6 x 1.5cm Package Contents: 1 x 370 RC Water Cooling Pump Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.