If wearing a chest strap is a problem for you as you don’t feel comfortable, you must look for GPS running watches with wrist-based heart rate sensors ( for example it’s Garmin Forerunner 630 in our review). However, wearing this has some disadvantages. You must really tighten the wrist sensor because if You wear it loosely, Your readings may be inaccurate.
The good news is that most people usually get used to it. When it comes to sprinting, the chest strap is much better. Remember also that sometimes when you buy one of the best GPS running watches, You get a chest strap with it but usually, they are sold separately