1. Adopting craft on the MOSFET, low heat generation, withstand large current instantly, and high reliability. 2. Adopting high performance 32 bit microprocessor, stronger computing ability and faster running speed. 3. The ESC is waterproof and glued, and the flat water-cooling design ensures efficient heat dissipation. 4. Super smooth start-up and accurate throttle linearity make the ESC suitable for all kinds of RC boat models. 5. The ESC has two running modes for different applications:"Forward Only" and "Forward and Backward". 6. Higher driving efficiency and more energy-saving. 7. Adjustable SBEC 5V/6V output voltage provides more powerful power to the servo. (40A/50A/60A/80A/100A have SBEC adjustable) 8. Multiple protections: start-up, over-heat, low-voltage cutoff, signal loss, phase loss. 9. Support high RPM motors, and compatible with most motors in the market. 10. Fully programmable via new programming box G2. Model: 20A SBEC G2 Cont./Burst Current(A): 20A/30A Battery cell /Lipo: 5-12NC/2-4Lipo BEC Output: 5.5V/4A Colour:As Shown Material:Plastic Size:62x30x9mm Package Contents: 1x Brushless ESC For RC Boat Thruste Accessories Only the above package content, other products are not included. Note: Light reflection 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.