Get some silicone sport bands for it (18mm)
The stock band for the f91w hurts my delicate skin after a couple days.
https://www.ebay.com/itm/114784192109
Best watch of all time once you add the band. I’ve had it for several years and the battery is still going, and it keeps time more accurately than any other watch I’ve owned.
Mega extra points for the ergo mouse (I have the same one) and the thinkpad too (I got an X1). A man of taste