NoneHigh-performance, Cressi X2 2^nd Stage Compact Octopus features hi-tech non-corrosive polymer construction. It has a downstream dependable demand valve system with the lever. The injection channels air flow towards the mouthpiece, producing a venturi impact for improved performance.

Technical Specs:

• Cressi XS 2^nd Stage Compact Octopus
• Downstream Reliable Demand Valve
• Soft Large Purge Cover
• Pre-Dive/Venturi Dive Switch Stops Free-Flow
• Front Yellow Quick Identification Cover
• Hi-Tech Non-Corrosive Durable Polymers Housing
• Comfortable Silicone Mouthpiece 
• 39"/100cm Hose Length
• Item weight: 135 g/4.76-ounce (without hose)
• 3/8" Threaded Hose
• 1 x User Manual