A rather straight or flat grip shape and a way of holding the bow. It does not move the arrow closer to the eye. It spreads the weight of the bow across the entire palm, as opposed to a high wrist, where almost all the weight of the bow presses on the web between the thumb and forefinger. Also,because the wrist is "broken" or down, it tends to naturally contribute to a little bend in the bow arm, which most think is a good thing
IMO, low wrist enables one to handle more draw weight comfortably compared to high wrist.