Summary Transform your average small bluetooth speaker into one with an awesome bomb shell shaped housing! Or if you don't have a bluetooth speaker, you can pick up this one or one similar for $10 at most stores which sell bluetooth speakers. The lid is perforated so that the sound quality isnt disrupted while playing. The slot for the speaker can fit any speaker which has a diameter of 2.375" and a height of 2.5". Print Settings Printer Brand: RepRap Printer: Prusa i3 Rafts: No Supports: Yes