@ccchan you have a Bangle.js 2 there yourself, so you could just measure it? There is also a CAD model of the case in https://github.com/espruino/EspruinoBoard/tree/master/Bangle.js2
I don't have anything else considered a 'popular model' but I guess maybe someone else will measure theirs, or you could google for the size
@Gordon started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@ccchan you have a Bangle.js 2 there yourself, so you could just measure it? There is also a CAD model of the case in https://github.com/espruino/EspruinoBoard/tree/master/Bangle.js2
I don't have anything else considered a 'popular model' but I guess maybe someone else will measure theirs, or you could google for the size