Experience the power and reliability of the Aqualung Calypso Titan Octo. Designed as a high-performance backup 2nd stage regulator, this mid-size octo is the perfect companion to the Calypso or Titan regulators. Its sleek and durable design ensures that you can rely on it in any situation. The Aqualung Calypso Titan Octo is crafted to provide exceptional performance and ease of use. With its Nitrox compatibility of up to 40%, you can explore the depths with confidence. The diver adjustable venturi prevents unwanted free-flow, allowing you to have full control over your breathing. This rugged and reliable octo is built to withstand the toughest conditions. With its user-friendly design, the Aqualung Calypso Titan Octo is suitable for divers of all levels of experience. Take your diving experience to the next level with the Aqualung Calypso Titan Octo. Trust in its performance, durability, and affordability. Dive with confidence knowing that you have a reliable backup regulator by your side.