The antenna is the limiting factor IIRC, the smallest module available is this thing: <a href="https://www.fdk.com/cyber-e/electronic_components/module/ble.html" rel="nofollow">https://www.fdk.com/cyber-e/electronic_components/module/ble...</a> which has the antenna as a slot in the package itself.
Is this not just a worse version of the nRF52 and nRF54 lineup? Larger size, fewer hardware peripherals, lower radio sensitivity. What is the new thing for this chip?
I don't immediately see a picture of the actual chip to get a reference size bybitself, that that chip inside the tooth is pretty wild. I wonder how you would even begin to power electronics within such a space. Or perhaps this is more of a marketing level of graphics.