Mitytoyo are good calipers and hold up extremely well in commercial/industrial applications where they are in constant use and are deemed worth the investment. I’ve seen all types of digital calipers pass metrology calibration certification and they all have been rated at ± .001" - even the Mitutoyos.
This includes a 3" caliper I bought to get into the tight confines of helicopter for measuring hole edge distance. It was a $14 Grizzy, I submitted to the cal lab and it passed. I figured for $14 it was worth the buying since if it did pass it could into tight spots the 4" caliper couldn’t.
But if you want a “solar powered” Mitutoyo and can afford it go for it. I personally am fine with Dial Calipers, the Fowlers can be bought with both Inch and Metric scales on them. They also pass calibration to the ± .001" standard. There are a few trciks that are easier to do with a digital that have to do with zeroing out where you can’t see the instrument because of where you are at and the angle the instrument is being held at.
A lot of the accuracy and repeatability of a caliper is in the operator technique. When you get your caliper, if you like, get with me and I’ll do a gage R&R on you and see how accurately you can measure. Also, how to check accuracy of instrument.