Here are the full specifications for the Apple Watch Series 4:

Here are the full specifications for the Apple Watch Series 4:

General:

• Operating System: watchOS 5

• Processor: S4 with 64-bit dual-core processor

• Display: LTPO OLED Retina display with Force Touch, 1000 nits brightness, and Ion-X strengthened glass

• Water resistance: Up to 50 meters

Connectivity:

• Bluetooth 5.0

• Wi-Fi (802.11b/g/n 2.4GHz)

• Cellular models: LTE and UMTS

Sensors:

• Electrical heart sensor

• Optical heart sensor

• Digital Crown with haptic feedback

• Accelerometer and gyroscope

• Ambient light sensor

• Barometric altimeter

Fitness and health tracking:

• Heart rate monitoring

• ECG app (electrocardiogram)

• Fall detection

• Workout detection (auto workout detection)

• Activity rings tracking (Move, Exercise, Stand)

• Breath app

Battery:

• Built-in rechargeable lithium-ion battery

• Up to 18 hours of battery life

Other features:

• Siri voice assistant

• Apple Pay

• GPS and GLONASS

• Speaker and microphone

• 16GB internal storage

• Compatibility with iPhone 6 or later with iOS 12 or later

Sizes and weights:

• 40mm case: 40mm x 34mm x 10.7mm, 30.1g (GPS), 30.1g (GPS + Cellular)

• 44mm case: 44mm x 38mm x 10.7mm, 36.7g (GPS), 36.7g (GPS + Cellular)