Check out the three Apple WatchesApple is introduces a collection of watches with two sizes
Because we knew one size wouldn't fit everyone, so we've also developed a smaller watch with matching, smaller straps. From different cases and straps, we've actually created three distinct collections. The first, Apple Watch, features a polished case made from a custom alloy of stainless steel. The Sport collection has an ion exchange cover glass and an anodized aluminium case. that is 60% stronger than standard alloys and yet it's incredibly light and durable. Apple Watch Edition is made from 18 carat gold that our metallurgists have developed to be up to twice as hard as standard gold.