Futaba digitally enhanced microprocessor cuts about half of the response time from transmitter input to servo reaction. Low profile allows for the servo to fit into wings and lie down in car chassis for less obstruction. Coreless motor and metal gears. Dual ball-bearings. Black plastic case. Dust and water resistant (not waterproof). One year limited warranty. Ideal for F3A aileron application and 1/10 scale electric touring car.