3" mini woofer shielded magnet bass speaker 10W RMS 75mm 8 ohms

You get a speaker rated at 10W RMS 20W peak. The resistance is 8 ohms. The outside dimensions are 78mm x 78mm (94mm diagonally over the screw holes) 51mm front to back and the diameter of the shield over the magnet is 68mm diameter.

shelf SBB9