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Has one button. Hold it down to play an MLG Air Horn. Use the sliders to customize your horn's pitch and duration, even while it's playing.Tap it a couple times then hold it down for a "Byer-byer-byer-byerrm" effect!Not ad supported. Not collecting any data. Will never ask you for permissions. Enjoy!Now adding watch support, which adds a button for Byerrm right on your wrist.