Apple Watch Series 3 GPS 38mm Sport Band Aluminum Case: GPS and a barometric altimeter track how far and high you goDual-core processor for faster app performance (2)Ultimate sports watch and intelligent activity trackerSwimproof so you’re always ready for the pool or ocean (3)Aluminum casewatchOS 4 is even more intuitive and intelligentApple Watch 38mm is Wi-Fi and Bluetooth 4.2 capableCondition: NewComes in Space Gray/Black 1. Apple Music requires a subscription.2. Compared with the previous generation.3. ISO standard 22810:2010. Appropriate for shallow-water activities like swimming. Submersion below shallow depth and high-velocity water activities not recommended.