Apple Watch Series 4 Aluminium "40 mm" GPS SpecsApple Watch Series 4 - MU642LL/A - Watch4,1 - A1977
About This Watch
The Apple Watch Series 4 is very similar to previous devices in its line-up but features larger screens as well as a few upgraded components which improve the functionality and features of the watch. The Series 4 has larger screen sizes of 40 mm and 44 mm which allows for more internal space inside the watch and more screen area for apps to use. This model does not have cellular capabilities but does feature GPS tracking.
Apple decided to focus on health with this device. This was emphasised by the new accelerometer and gyroscope which are used to detect when a user has a fall. The heart rate monitor already tracks sudden spikes or irregular patterns and warns users of the risk of a stroke. Apple introduced an electrical heart sensor(ECG) into the Series 4 watch. This single pulse electrical heart sensor is able to detect signs of atrial fibrillation and alter the user.
Storage & Memory
The Apple Watch Series 4 comes with *pending* MB of RAM and 16 GB of memory.
Screen Size and Resolution
This Apple Watch Series 4 has a 40 mm sized OLED display with strengthened Ion-X glass and a resolution of 324×394. This display is force touch capable and also has a water resistance protection of an estimated 50 meters.
The Apple Watch includes the following features:
- Force touch OLED display.
- Digital crown control piece.
- Multiple wristband units.
- Heart-rate monitor.
- Electrical heart sensor (ECG).
- Emergency heart-rate detection.
- Wireless Charging.
- Water resistant.
- GPS tracker.
The Apple Watch Series 4 comes with Apple watchOS 5 for its operating system. It is also powered by a dual-core Apple S4 processor. Apple has not released processing speeds for this processor.
The Apple Watch Series 4 battery is expected to go for up to 18 hours overall but specifically 2 hours of talk time, 10 hours of audio and up to 6 hours of working out while using GPS. There is no substantial improvement from the Apple Watch 3 on battery life.
Introduction Date: September 12, 2018
Discontinued Date: N/A
1 (2 cores)
802.11b/g/n 2.4 GHz
Apple Watch Series 4 (40 mm)
Apple Order Number
2 – 18 hours
Watch Series 4 40mm
Apple Model Number
A1977 (EMC 3225)
Operating System and Display
1.06 oz. (30.1g)
Minimum iPhone Support