The 5-Watt Yellow GLS LED Bulb (B22) by LiquidLEDs is one of our most energy-efficient bulbs, generating a warm, yellow light. It emulates a traditional light bulb, with a yellow encasing surrounding LEDs to disperse light. Compared to a 40-Watt incandescent, the GLS LED provides 90% in energy savings and a 25,000-hour lifespan.