I’m an ex hardware design engineer turned software dev. My advise. Pick the chip that suits your requirements, get a development board and get the software runn

I’m an ex hardware design engineer turned software dev. My advise. Pick the chip that suits your requirements, get a development board and get the software running. Then when you have a non wearable prototype that dies all the things you can hand it off to a design engineer with the “now make it tiny” remit