The Harmonic Bat is a variation to the Gartley pattern which was developed by Scott Carney. It is considered to be one of the more accurate patterns exhibiting a higher success rate than any other harmonic patterns. The bat pattern might look similar to a Gartley 222 Butterfly pattern but differs only minutely in terms of the Fibonacci ratios between the swing/pivot points.
AB leg can retrace between 38.2% – 50% of XA leg BC leg can retrace between 38.2% – 88.6% of AB leg CD leg can retrace up to 88.6% of XA leg CD leg can also be an extension of between 1.618% – 2.618% of AB leg