1-10pcs Mini Speaker 3W 4R Diameter 4CM Amplifier Horn Loudspeaker Trumpet 3-Watt 4 Ohm 40mm Small Speakers for Arduino Kit

1-10pcs Mini Speaker 3W 4R Diameter 4CM Amplifier Horn Loudspeaker Trumpet 3-Watt 4 Ohm 40mm Small Speakers for Arduino Kit

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