Thesecan come in handy when measuring your wrist circumference in order to calculate your Apple Watch band size. Apple Watch Sizes: Apple Watch sizesrefer to the length from the top of the device to the bottom, not from one side to the other. 38 mm is 1.49 inches; 40 mm is 1.57 inches; 41 mm is1.61 inches; 42 mm is 1.65 inches; 44 mm is
Toadjust your Apple Watch band size (for men), you'll need to do one or more of the following: Add links back into a metal link bracelet (if initially removed) Remove links from metal link bracelets (if initially too large) Select different hole options on sport bands or leather loop bands. Adjust the length of a Sport Loop band.