Gikfun 4Ohm 40mm Diameter 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1794

2pcs 4Ohm 3W 40mm Diameter Full Range Audio Speaker Stereo Woofer Loudspeaker, Two mounted mini audio speakers, audio speaker stereo woofer, ideal for radio, interphone, multimedia speakers, can be used for Bluetooth Speakers, radio replacement, also suitable for DIY hobby soldering., resonance frequency : 320Hz±20%, Insulation Resistance : 10MΩ, characteristic sensitivity of loudspeaker : 83±3dB, nominal impedance : 4Ω±15%, input-power rating : 2W, rated frequency range : 0-20KHz, distortion factor : maximum 5%