I have one 48ft set and 4 x 30ft sets. All work great and all bulbs are operable. In addition to the string I have ~40+ colored and white bulbs (in box). All strings are feit electric products. The 48ft string has 24 bulbs and the 30ft string have 10 bulbs each. See amazon links below for more information on each set. reach out with questions. Cash or venmo only, please!