Tied only with Ms. Fortune for having the fastest jab in game.
Short range and will whiff against many crouching opponents so it's mostly used for punishes/stuffing.
It can be a decent anti-air against IADs since it's fast and the hitbox reaches a bit above the hurtbox. Dashing under them and pressing it can be useful for punishing a lot of otherwise difficult to punish air normals (such as Double j.HP) on the way down.