Green LongLife 5050156 LED Replacement Light Bulb 42mm Festoon 211 base 35 Lumens 12v Natural White (2 per pkg) 100,000 hours life expectancy 11-15 volts DC including 12v; this voltage range is designed to withstand RV power fluctuations 2 x LED Replacement light bulb for bulbs with 42mm Festoon 211 base Low heat, safe to touch, and instantly bright Energy efficient and eco-friendly