Dissemble the links. When the system holding the links collectively is unlocked, take the links apart by shifting the clasp side with the strap to the case, which can be the central part of the watch with the dials. watchOS 7 also provides optimized options for older adults, starting with https://beauauldt.theobloggers.com/32841827/not-known-details-about-xl-apple-watch-band-42mm