20,00 life ours. Medium base. Non-dimmable. The performance specifications (watts and life) printed on this product package should only be considered an approximation of expected performance. Twinkling soft white crackled glass fairy light bulbs make stunning pendant, string, lights or party lights. The unique decorative bulb installs into any medium base socket and makes it easy to add a distinctive look to any space while enjoying the latest energy saving benefits of LED. Fits standard light socket. C/UL/US listed. www.feit.com. Other bulb designs available. Learn more at www.feit.com. Made in China.