Green LongLife LED replacement lights are built with the finest LED lighting technology and materials. This Green LongLife LED features: 921/T15 Wedge base; 8-30 volts DC including 12v and 24v--this wide-range voltage is designed to withstand RV power fluctuations that can damage ordinary LED lights; 340 Lumens; Natural White color; 3.24 power watts; 25 High Power 5050 SMD LEDs; beam pattern of 120 degrees; and color temperature of 4000-4500K. Each Green LongLife LED bulb has a life expectancy of 100,000 hours--many times longer than a standard bulb--which saves money and time, especially in those hard-to-reach places. This product does not contain mercury or emit ultraviolet (UV) light. There are no moving parts or filaments so it can withstand shaking and vibration. It's made with high quality SMDs (surface-mounted device) on aluminum base and weighs approximately 1 ounce.