The QR12 is a high-performance regulator that delivers air evenly using its balanced diaphragm design even at depths beyond recreational diving limits with minimal breathing resistance. The result: easy breathing even under extreme water pressure. Its 4 low pressure and 2 high-pressure ports provide a variety of configurations for any diving situation. The environmental seal protects it from dirt, silt, pollution or extreme cold temperatures making it an ideal regulator for any environment. Available in Yoke and DIN 300.