Holds Pressure And Fires As It Should. It Has A Replacement Cap And You Have To Pay Attention When You Put It On So It Doesn't Leak. But When Put On Properly It Holds Fine.

From iSoaker:

The shoulder strap and moulded handle make it easy to carry and refill the blaster. Its 5x-rated aperture unleashes a powerful stream from its mid-sized CPS pressure chamber. Along with its 2.35L water reservoir, good stream range, and quick repumping ability, the CPS 1200 is a formidable weapon on the water war front. 

The Super Soaker CPS 1200 makes a great all-purpose, perfect for small to medium skirmishes. It can also be used as a "heavier"-type backup weapon if one is using a larger CPS model as a main weapon. 

Pros

Mid-sized, light, easy to carry especially thanks to its shoulder strap. Despite its size, it packs good power and stream size. It also does not take too much effort to pump up the firing chamber. 

Cons

As with most of the CPS line, one can quickly empty the tank if being a little overzealous with the trigger. One thing to be careful of is the pumping mechanism which extends from the front of the blaster. This pump, though it appears to be fairly sturdy, should not be left extended for longer periods of time to reduce the chance of falling on it and breaking it, leaving the blaster useless.