I have one of the original auto-inflatable SOSpenders. I dont think they are made today. It still works fine and I change the “pill” periodically. Looking at this thread, it may be time for me to buy some new technology. At age 65 and fishing a rough water lake like LOZ, I wear the PFD all day. Even with the boarding ladder it is hard to get back into a bass boat at my age. I think I would feel safer with a new purchase because of this thread, Thanks, Guys!