How long can red eared slider turtles live out of water?

Adult snapping turtles can stay under water for 40-50 minutes. I have a baby snapper and he stays under for about 10-15 minutes. I know he can hold his breath for longer but it is really just a choice thing. If a snapping turtle knows that a potential predator is near by then he may stay down for 20 minutes or more. If a baby snapper is comfortable with his environment then he may leave his head above water or come up every minute or so.