Who wants to carry around an iWorx TA 220 instead of a Garmin Fenix 6 – we are looking for a better solution

The Garmin Fenix 6 can measure heart rate and respiration rate. Resting heart rate and respiration rate are important parameters for meditators. But smartwatches are only of limited use for scientific purposes. The alternative is a device such as teh iWorx TA 220. But who want do carry around 24 x 7 such a bulky …