I CALL THESE 7700+ BUT I LIKE TO UNDER PROMISE AND OVER DELIVER! IN MOST CASES YOU WILL RECEIVE A BULB WITH EVEN MORE LUMENS. TYPICALLY IN THE RANGE OF 7800-8100 (STABLE LUMENS) EACH BULB IS PERSONALLY TESTED BY ME PRIOR TO SHIPPING AND RESULTS STAMPED. IF A BULB DOES NOT PUT OUT AT LEAST 7700 LM AT 6 MINUTES IT DOES NOT PASS QC.