The Apple Watch Series 4 40mm GPS in Gold Aluminum (2018) is a smartwatch that has a 1.57-inch OLED display, a dual-core Apple S4 chip, 16GB of storage, a heart rate sensor, an ECG sensor, a GPS, and a water-resistant design. It runs on watchOS 5 and supports wireless charging and Bluetooth 5.0.
Key Features
- 40mm gold aluminum case and a 1.57-inch OLED display with a resolution of 394 x 324 pixels and a pixel density of 326 ppi.
- Powered by a dual-core Apple S4 chip with 1GB of RAM and 16GB of internal storage.
- Built-in GPS, a heart rate sensor, an accelerometer, a gyroscope, a barometer, a speaker, and a microphone.
- It supports wireless charging, Bluetooth 5.0, Wi-Fi 802.11 b/g/n, and NFC.
- It runs on watchOS 5, which is the operating system that powers the Apple Watch. It has features such as Siri, Activity, Workout, Breathe, Walkie-Talkie, and ECG.
- It is water-resistant up to 50 meters and has a battery life of up to 18 hours.
