Apple Watch SE GPS + Cellular is equipped with a 2-core S8 SiP processor and a Retina LTPO OLED display. The smartwatch therefore uses the same processor as the new Ultra and Series 8 collections. The watch also includes new improved sensors, thanks to which it supports a new feature such as crash detection, which detects a traffic accident. As usual, the watch also has optical heart rate measurement, irregular heart rhythm notification, high and low heart rate notifications, fall detection, compass and GPS connection. The Cellular model has a mobile connection, thanks to which you can go out with only the watch on your wrist and the phone at home. When you have an Apple Watch SE GPS + Cellular equipped with a mobile connection, with an active mobile connection, you can e.g. make calls and send messages - all without an iPhone. You can even make an emergency call while traveling abroad. When Apple Watch SE is away from iPhone and connected to a cellular network, you can receive calls and messages from an active connection. If the iPhone is turned on, you can receive messages and notifications about incoming calls on the other connection even when the iPhone is not nearby. If you answer the call, your watch will automatically call you back using the active connection.