The EZ Servo motor consumes about 63% less energy and is 1/3 lighter than the average clutch motor. It does not generate any appreciable heat and has only 3 main moving parts, two ball bearings and the rotor.
The EZ Servo acts just like a clutch motor but the difference is that you don't hear it running. It only runs when engaged and the maximum sewing speed can be adjusted to the speed you desire no matter how hard you depress your foot the treadle. 

Features:
Clutch-Less, Never needs a replacement Clutch or Brake
Variable Speed completely adjustable by turn of a switch
Power switch lights up when on (Diode Light).
Up to 4000 RPM / High Torque 400 watts
Reverse Motor rotation with a flip of a switch
110 Volt Light Socket