Apple Watch

The Apple Watch is a smartwatch series developed by Apple. The device integrates functions for communication, health monitoring, physical activity measurement, and app usage. Apple Watch models feature a touchscreen, sensor systems, wireless connectivity technologies, and the watchOS operating system.

The Apple Watch was unveiled on 9 September 2014 and released for sale on 24 April 2015. Subsequent generations include the Series, SE, and Ultra models. The Apple Watch Series 1 and Series 2 were released in 2016, the Series 3 in 2017, the Series 4 in 2018, the Series 5 in 2019, the Series 6 and the first SE model in 2020, the Series 7 in 2021, the Series 8, second-generation SE, and Ultra model in 2022, and the Series 9 and Ultra 2 model in 2023.^【1】

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Apple Watch models have a rectangular case with rounded corners. The front of the device features a touchscreen, while the side includes a rotating control dial known as the Digital Crown and a side button. The Digital Crown enables screen scrolling, zooming, and app navigation.

Apple Watch models use OLED display technology. Some models feature an always-on display. Case sizes vary by model series. Different models have been produced with case dimensions of 38 mm, 40 mm, 41 mm, 42 mm, 44 mm, 45 mm, 46 mm, and 49 mm.

Apple Watch models are powered by system-on-chip processors developed by Apple. Successive generations incorporate S-series chips. The devices include an optical heart rate sensor, electrical heart sensor, accelerometer, gyroscope, compass, GPS system, and altimeter. Some models also feature a temperature sensor and blood oxygen measurement capability.

^{Sensors Used in Apple Watch (Source: Yusuf Eren İkier)}

Apple Watch models operate on the watchOS operating system. The system provides functions for notification management, app usage, health data visualization, and device settings configuration. The system synchronizes data with the iPhone.

Apple Watch models measure heart rate, track exercise, record sleep data, and monitor daily activity. Some models include an electrocardiogram system, fall detection, crash detection, and emergency calling features.

Apple Watch models use Bluetooth, Wi-Fi, and GPS systems. Some models support cellular connectivity. The devices use a magnetic wireless charging system.