Datasheet

Please note: A few of the on-board hardware elements use PWM and
analogue output so the Feather M0 Express or Feather M4 series are
recommended, they'll work best with this wing and let you make the
most of it. For example:
 Feather 32u4 and 328p do not have PWMs for all the RGB LED pins,
and no analogue audio output support
 Feather nRF52, ESP32 ESP8266 do have PWMs on all the RGB LED
pins but no analogue audio output support
 Feather M0 basic boards only have audio output support in
Arduino, not CircuitPython.
That doesn't mean you can't use this 'wing with the Feather ESP8266 or
nRF52832, just that you won't get any sound effects. You can still use
the accelerometer, NeoPixels, RGB LED, etc.
Comes fully assembled! No soldering required.