Smart activity coaching. An enhanced Heart Rate app. Your favorite playlists right on your wrist. A built-in altimeter. And a more powerful processor that lets Siri speak to you. Introducing Apple Watch Series 3. Now you can be more active, motivated, and connected than ever. AppleWatch Series 3 GPS + Cellular, 42mm Silver Aluminum Case with Fog Sport Band Color: Silver/Fog. Gender: Unisex. Age Group: Adult.