When you press <STATS> key, the unit switches to statistics mode. When you shoot, the stats are instantaneously updated and displayed as the new shot is added. You can move over to any stats, (Low, High, Average, Extreme Spread, STD, PSTD, etc) and watch what happens to stats result as the shot is fired. You can switch instantaneously to shots velocity by simply pressing <DATA> key, and you can similarly go back to stats by pressing <STATS> key.  This is an innovative feature for this generation of chronographs.