ARDUINO NANO 33 BLE (inhale exhale project, respiration)

I m interested in getting Arduino Nano 33 BLE connected to my macbook (operating system: High Sierra ). I would like to put it in a custom made cloth so I have it positioned on my chest. I would like to measure the respiration movement (inhalation and exhalation). More specifically have a magnet placed on one breast and the Arduino - magnetometer functioning on the other breast.
I would like to have this measurement translated into sound. Also, the Arduino works wirelessly but would a portable lithium battery charger would be ok for it to work?
Thank you

Welcome to the forum

Please read the How to get the best out of this forum

The Arduino store under FAQ gives you the option how you can power the board.

If you like some more specific answers please provide information about your system, links to non-Arduino components datasheets and documentation. e.g the "portable lithium battery charger". Try to find the answer yourself and then explain what you found and ask whether others can confirm them or give you a better answer.

Good posts tend to get more attention. You need to help people help you.

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