DIGITAL IN-EAR METRONOME Designed for the golfer, StrokeRhythm is an ultra-small metronome that fits your ear like a headphone. By practicing your swing while listening to the rhythm directly in your ear, you can stabilize your rhythm and improve your swing. You can also choose from a wide range of tempo and time settings to find the swing rhythm that works best for you. The Tempo can be easily adjusted using the jog switch, while a patented locking mechanism ensures that the unit stays firmly in your ear.