Smartwatches are useless for measuring actual stress levels, study says
"Be careful and don't live by your smartwatch"
Smartwatches are not a 'must-buy' for most people at current prices and with their current capabilities, but if you are set on getting one, there are a handful of things to consider such as compatibility and key features. Here are our picks in four distinct categories: best for iPhone users, best for Android users, best fitness-centric smartwatch and our luxury pick.