Are watches still considered viable? In what situation would anyone want a watch when they already have a phone.
Batteries, phones are more demanding in this regard. What situations? In water, in the wilds, in any situation you can check your wrist, but not pull out a giant rectangular block in needing use of both hands.
Even ignoring the fact that accuracy past minutes is just splitting hairs.
IT IS TERRIBLY INCORRECT TO SAY IT IS JUST SPLITTING HAIRS. It is correct to say most people do not need accuracy past minutes, and even further more correct to say they don't need accuracy past seconds. Accurate time measurement is why the British had such a strong navy during the Victorian period- by using something called a "Chronometer"(name coming from combining chrono, the greek word of time, and meter for measuring). This is because Longitude cannot be easily devised in methods other than accurate time measurement. Without being able to accurately get your latitude, you cannot accurately postion yourself when on the ocean, and if you cannot accurately position yourself, you put yourself at a great risk of missing your target destination, or worse, wrecking your vessel by crashing it(affects general citizens on boats, as well as trade and navy use. Also affects militaries keeping a strict timeline for their operations).
That is to say, accuracy past minutes isn't just splitting hairs, but there's enough situations where you would want accuracy past minutes. Accurate timing of how long things take can be another aspect. I don't know how a speedometer works, but I wouldn't be surprised if part of it is taking time measurements, and distance measurements(similarly for other measurements involving time, like cooking food precisely).
I stopped wearing watches of any kind the moment mobile phones became a thing. Besides I always found them uncomfortable at my hand.
Most watches use a rubber strap to go around your wrist, with holes to set a certain tightness. In my experience, rubber just irritates the wrist, is terribly inflexible, and the tightness "holes" of it were always uncomfortable, in the same way that leather belts with punched holes are usually too tight or too loose. I'm of the opinion Perlon straps are superior, as the fabric doesn't agitate the skin as much, and the strap has no predetermined holes, so will fit exactly as tightly as you want it. Perlon straps also exist for belt-form, which is what I always use for belts as I have this same issue with belts(holes punched every inch, or not enough holes punched into leather belts have historically been an issue with me needing to punch my own holes in other belts). A watch is useful in situations where using a phone is either really stupid, infeasible or wasteful(out in the woods, driving, or just generally out and about without a phone).
In general watches made for mass-consumer use, like those made by Casio, tend to be uncomfortable to wear out of the box without getting a different strap. A lot of their actual watch faces also tend to be bulky as hell.