If you're thinking of getting an Apple Watch, you'll have lots of decisions to make regarding style and size. This is atypical of Apple, which has usually kept their product line tightly focused. So it will be interesting to see how it does with a device that's also a fashion accessory.
Rene Ritchie points out that the free Apple Store app lets you toggle between actual-size images of the 38 mm and 42 mm versions. You can hold that actual-size image on your iPhone's screen on your wrist to see how it looks and fits. Rene says that he's had the opportunity to try the two different sizes in person, and that "the Apple Store app does a surprisingly good job of simulating the way they look on your wrist."
Simply download the app, select the Apple Watch collection that you'd like to try, tap on View Pricing, and then tap on Compare Sizes. You'll be able to toggle between the two sizes to see which you like.
