• There are three types of  Apple Watches, Apple Watch (Stainless Steel), Apple Watch Sport (Aluminum), and Apple Watch Edition (18k gold, nothing else).
• It requires an iPhone because you can text and answer calls on your Apple watch.
• It has a Sapphire Crystal Screen.
• Apple Watch has a digital crown.
• When your iPhone gets a notification your Apple Watch vibrates.
• There is a Heart Moniter on the bottom of the device