This is an Aqualung octopus regulator. It has been used for about 10 years, so it shows considerable signs of wear. I carried it on dives until July 2024 and it functioned without any particular problems. To be honest, I don't think I actually used it to breathe air much after my training, but I did check its operation before each dive. After use, I rinsed it with fresh water to remove salt. As you can see in the photos, the mesh part is damaged. I was told by a dive shop that it wouldn't affect its use, so I continued to use it as is. I haven't had it overhauled recently, so please use it at your own risk. I do not guarantee its operation, and I do not accept returns or exchanges. Thank you for your understanding. Regulator, First Stage, Gauge Compass, ABS 1370