MAGIC SOCKET (WATT WATCHER)
PATENT # 4-888-678
This product prolongs the life of an ordinary incandescent bulb by at least 10 times its rated life. It also saves energy up to 27.8%. It does this trick by soft-starting the Bulb to alleviate the thermal shock when switched on and by reducing the RMS voltage fed to the bulb by chopping off a portion of Sinusoidal Wave Voltage.