28mm 8ohm 2W+ rated bass speaker. I have used these on many boards and not had one blow yet, though I normally run volume at 80-90%. They are loud and clear and provide a very deep hum.
Speaker only and Wired options available. Select Wired from the drop down menu and I will attach 6" of black and red 28-30G wire to your speaker and pre-tin the ends.
I ship my speakers in the hard protective shell you see in the photos with a small piece of dense foam inside to keep the speaker from moving in transit.
PSA - Do not solder to your board while the battery or the SD card is in.