Fat Shark Trinity 3-Axis Head Tracker Module: Dominator This is the Fat Shark RC Trinity 3-axis HT Module: DominatorFeatures:Smoothest and most accurate 3 axis head tracker everRapid fluid motionZero error  the head tracker is so natural that it becomes an extension of your environment and you soon forget you are even using one.Trinity is a quantum leap forward in head tracking performance and it will change how FPV pilots fly.