Feature: 1. Specially Designed Propellers: RC underwater thruster has specially designed propellers can provide effective and powerful thrust, making it having excellent underwater thrust and impact performance to ensure higher work efficiency. 2. Fully Waterproof Underwater Propeller: Waterproofed treatment on rotor and propeller, can be completely immersed in water for normal work. And it brings you much convenience. 3. Replacemen Part: RC underwater thruster is a wonderful upgrade replacement for the broken or old one, and it also can help better control your remote control boat. 4. Scope of Application: RC underwater thruster is applicable to nesting boat, trawl unmanned boat, remote control boat and duck boat. 5. Applicable People: RC boat underwater thrustert is preferred by the knowledgeable model hobbists and remote control enthusiasts. Specification: Item Type: RC Underwater Thruster Material: Steel, Copper, Plastic Color: As Pictures Shown Weight: Approx. 284g / 10.0oz Model: 545 50T Brush Motor Blade Diameter: Approx. 48mm / 1.9in Motor Size: Approx. 13.8x4.5x4cm / 5.4x1.8x1.6in Lithium Batteries: 2-4S Lipo Working Voltage: 7.4V-14.8V Maximum Continuous Power(W)/10S: 160W Maximum Continuous Current(A)/10S: 10A Thrust: 700-1000G Length of Outgoing Line: Approx. 800mm / 31.5in Plug: Approx. 3.5mm / 0.1in Application: Nesting Boat, Trawl Unmanned Boat, Remote Control Boat And Duck Boat. Package List: 1 x Motor 1 x Hex Wrench 8 x Screw Note: 1. Please allow 1‑3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.