Now that smartwatches are available in a range of styles and sizes from a number of top companies, shopping for a new one might be difficult due to the sheer number of alternatives. Remembering that you need to pick a smartwatch that works with your smartphone is one method to focus your search. While some smartwatches only function with iPhones, others only function with Android devices.
But it's just the tip of the iceberg. The majority of smartwatches should allow you to get smartphone alerts and measure your heart rate, activities, sleep, and GPS. You can actually leave your phone at home because many of them offer contactless payments and others have cellular or LTE connectivity.