UPDATE: Most strands don't last more than a season. I really loved them when I first got them. I had 6 threads but there are 2 left that really work. I've tried bulb after bulb on each filament and now I'm just giving up. I even used a circuit tester to see where the fault was and tried replacing the fuses. nope I noticed that most incandescent bulbs had black soot/residue on the filaments that stopped working. I'm not sure if there's a newer version, but the ones I have (red border) eventually stop working. I have other (non-flickering) lights that are probably 20 years old and still work, so I don't think 2 seasons is too much to ask. LOVE these lights. Added these to my pre-lit tree and they just added a ritualistic amount of shimmer. Everyone commented on them! Fabulous! If there was a way to add a video to my review you would see the brilliance they add.