This is the first Smartwatch that was released by Apple. It has built-in Bluetooth to connect to your iPhone. It also connects to the internet and has a built-in accelerometer to track your speed, a gyroscope for direction, and ambient light sensor so you see the watch at any time of the day.
If you love exercising and tracking how you are doing, then the used Apple Watch Series 1 is the perfect smartwatch for you. It has great heart rate-tracking functions and an improved Music app that now syncs albums and playlists in Apple Music more easily to help you work out to the right music.
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