Just swim with it. I wouldn't be afraid to dive 50 meters with a Noob replica sub with proper gaskets. I wouldn't even be scared at 100 meters. I've gone swimming with my much more expensive gen watch (claimed 10ATM resistance) even without a screw down crown. I'm probably being a bit cavalier but what's the worst that can happen? I have a lot of spare Sellita SW200 movements at home. Ok, if the gen watch got waterlogged, I really would be upset. But so far so good. 
If you're paranoid about water, just get yourself a Seiko SKX for water use. Otherwise, enjoy your V7 Noob. Cuz it can handle the water.
If you're paranoid about water, just get yourself a Seiko SKX for water use. Otherwise, enjoy your V7 Noob. Cuz it can handle the water.