Apple Watch Series 4 (GPS, 44mm) – Space Gray Aluminium Case with Black Sport Loop

GPS

Over 30% larger display screen and also 50% louder speaker

Electrical and also optical heart sensors

Digital Crown with haptic comments

50% louder audio speaker; Built-in rechargeable lithium-ion battery

S4 SiP with faster 64-bit dual-core processor

Better accelerometer and also gyroscope for fall discovery

Swimproof

watchOS 5

Aluminum situation

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