GPS
Over 30% bigger screen²
Optical and electrical heart sensors.
Digital crown with haptic feedback.
50% louder speaker²
S4 SiP with faster 64-bit dual-core processor
Enhanced accelerometer and gyroscope for fall detection.
Swimproof³
watchOS 5
Aluminum case
Selection may vary; See a sales associate for available models. Apple Watch Series 4 (GPS) requires an iPhone 5s or later with iOS 12 or later.
Music Apple Music requires a subscription.
²Compared with the previous generation.
³ ISO standard 22810: 2010. Suitable for activities in shallow water such as swimming. Shallow depth diving and high-speed water activities are not recommended.