I leave the level feature turned off in mine, its basically useless. It flashes unless you are very precise on the level, and you have no idea which way you are off when you are close to level. Mine has under 1 degree before it flashes, but in the field figuring out which way you are out 1 degree can be hard. Much easier to just use a good quality bubble.
That said the glass is pretty good, mine tracks well and it does everything I need in a hunting scope.