Here is a smart shirt/bra that helps you take your breathing to the next level. The Oxa Shirt/Bra are made with quick-dry, stretchable fabric. It comes with iOS and Android connectivity. It uses smart sensors to give you feedback on your HRV, heart rate, and skin temperature.
More gadgets like this ➡️ : here
The companion app tracks and guides you through breathing. The sensor lasts up to 24 hours on battery.
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