Gikfun 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725 2pcs 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino Rated Power: 3W Rated Impedance: 4 ohm Diameter: 2 inches Height: 30mm It will work well for home audio-visual equipment and other HiFi speakers. Package includes: 2 x 4Ohm 3W Full Range Audio Speaker