Pretty sure Quik Cell is many years old now. Good suit in its day but way better neoprene now. Bong says Critically Welded internal seams which I take to mean not all seams are sealed. Also probably an old suit design as not seen that entry system since around 2010.
Do check though with seller. Probably better off spending a bit more money and try to get last years suit on offer somewhere. If I had the choice would get a 4/3 as it has a better/longer wearable season. Tell us what you want the suit for.