Meet the Moov HR Sweat: a smart wearable device that provides you with heart rate based coaching. It coaches you to get in the target heart rate zone and helps you reach the best results with HIIT workouts. The headband is sweat-absorbing and convenient to wear.
More items like this: here
The companion app that provides you with voice coaching as you go through workouts. Costs under $100 at this time.
*Our articles may contain aff links. As an Amazon Associate we earn from qualifying purchases. Please read our disclaimer on how we fund this site.