Vibration resistant CA type bulbs. Comfortable, inviting light. 1 year life (Based on 3 hours use per day). 60W. 600 lumens. 1.4 year life (Based on 3 hours use per day). Let GE Show You What Light Can Do: From light that lets you see every detail to light that helps you connect with family and friends, from vibrant to gentle - GE's new home lighting solutions make it easy to find the right light for your home. 521-1049 Lumens: Comfortable, inviting light. Rugged bulb construction withstands ceiling fan vibration. Visit us on the internet - www.GELighting.com; 800-GE-Light. Medium base. Made in China.