Polar Grit X2

Smartwatches and fitness wristbands are real all-rounders: they serve as heart rate monitors and altimeters, count steps, calculate distance travelled and calories burned and analyse sleep patterns. Some can be used to play music, make contactless payments, make phone calls or send and receive messages...

The Grit X2 is a decent sports watch that supports virtually all conceivable sports and workouts. If you value reliable heart rate data, you should pair it with a chest strap - like pretty much every other sports watch. As a smartwatch, it only performs rudimentary tasks, but they are reliable...