The Innokin Crios Sub-Ohm Tank is a 4.0ml capacity tank features a sleek stainless steel construction with a glass tank. The Crios features a convenient twist off cap top fill design that is easy to refill. The Crios features triple airflow slots that may be adjusted using the adjustable airflow control valve. The Crios provides a balance of flavor and vapor production using the Crios atomizer heads. The Innokin Crios includes (2) Crios Kanthal BVC Clapton 0.65ohm atomizer heads designed for variable wattage.