Compared to competing LED PARs, the Litetronics Parfection LP15566SP4D spot light has a higher lumen output and maintains that advantage over their 50,000-hour rated life. This is due to the patent pending Thermal-Breeze heat sink design, which allows the LEDs to maintain optimum performance. This LED Parfection bulb does not need heavy metal heat sinks and actually weighs less than the standard halogen bulb because the Thermal-Breeze heat sink provides a lower LED temperature to ensure optimum maintenance - even inside recessed ceiling cans. The bulb drastically reduces maintenance and replacement costs, as well as landfill waste. Perfectly designed, perfectly green, the Litetronics LED Parfection series solves all of your lighting challenges when replacing a halogen reflector bulb.