Futaba ATTACK_SR is a 2-channel digital proportional R/C set for R/C cars, boats (yachts), and other models. It includes a transmitter with a battery level display and alarm, throttle stick neutral position modification, and servo reversing switch, as well as a receiver, two servos, an FET electronic speed control, and accessories. The receiver is lightweight and has a built-in BEC (power supply up to 8.4V) and replaceable crystal. The servos are also lightweight and have a torque of 3.2kg-cm (44.40z-in) and a speed of 0.23sec/60degree.