I'm interested in getting an oxygen tank. Its doesnt have to be high capacity, heck it doesnt even need to have an efficient system to breathe from it. I'd just like to have one that can deliver a minimum of ~5 minutes of breathable oxygen per charge, though preferably more per refill.
*I'm not going to try and take this scuba diving or anything like that.
*I'm not going to try and take this scuba diving or anything like that.