The Aspire Nautilus 2 Tank is a MTL tank with 2ml liquid capacity, bottom adjustable airflow and a top-filling system. It comes with a spare replacement glass, 8 x O rings, a 0.7ohm BVC coil with its recommended power output being at 18-23W, and a 1.8ohm BVC coil with its recommended power output being at 10-14W.