Honestly, I don't buy the physical timer thing. It's just another thing to buy and keep track of. My phone timer works fine if I just silence it and put it away. The whole winding ritual seems silly. You don't need a hunk of plastic to make time real, you just need to pay attention.
That winding motion isn't just setting a timer, it's physically demarcating a slice of your attention. You escape the pull of the phone's entire universe, where a notification about bread delivery can derail your work on a spreadsheet. The distinct click at the end becomes a definitive period on the task, more final than a silent screen fade. There's a quiet discipline in not being able to dismiss it with a swipe, forcing you to either honor the time or get up and stop it. Modern life is all about abstraction, but sometimes you need a hunk of plastic ticking on the desk to make things real.