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  • Keeps Octopus Secure and Ready
  • Corrosion Resistant Design
  • Fits Most All Mouthpieces
  • Durable Rubber Mouthpiece Holder
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  • Reinforced Techno Polymer Casing
  • Large Diaphragm for Increased Breathing Sensitivity
  • Classic Downstream Valve Design
  • Venturi-Initiated Vacuum Assist (VIVA)
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Mares MV Octopus

  • Lightweight with a minimalist compact design
  • Ambidextrous design for ease of use
  • Reliable 2nd stage downstream demand valve
  • Durable with superior resistance to abrasion
$129.95 $119.95
$129.95 Save:  $10.00 (8%)
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  • Lightweight, full size octopus
  • Affordable pricing
  • Fully featured providing excellent performance
  • Manufactured in Italy  
$109.95 $89.95
$109.95 Save:  $20.00 (18%)
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  • Lightweight and durable construction
  • Large, soft purge button
  • Reliable downstream demand valve  
$129.95 $124.95
$129.95 Save:  $5.00 (4%)
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  • Lightweight, mid-size octopus
  • VAD System provides easy breathing at any depth
  • Mesh Grid design reduces free-flow
  • Yellow SuperFlex braided hose
$169.95 $124.95
$169.95 Save:  $45.00 (26%)
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  • Integrated inflator and octopus
  • Lightweight and streamlined design
  • Designed for one handed easy operation
  • Downstream demand valve
$242.00 $209.95
$242.00 Save:  $32.05 (13%)
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  • Rugged, reliable and affordable
  • Allows for use on left or right side
  • Ideal design for sharing air with buddy
  • Ready for nitrox  
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  • Vertical regulator design
  • Under the shoulder hose positioning
  • Downstream demand valve design
  • S-VAD system for easy breathing
$176.00 $109.95
$176.00 Save:  $66.05 (38%)
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  • Simple and rugged design
  • Large diaphragm for optimal inhalation
  • Reliable downstream demand valve
  • Reliable silicone rubber low pressure seat
$156.00 $134.95
$156.00 Save:  $21.05 (13%)
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  • Combined one hose octopus and inflator
  • Ergonomic design for comfort and performance
  • Reliable downstream demand valve design
  • Mesh grid system for water inflow and outflow
$294.00 $259.95
$294.00 Save:  $34.05 (12%)
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  • All titanium metallic components
  • Lightweight with total corrosion resistance
  • Compact, with low profile exhaust deflector
  • Automatic airflow adjust for easy breathing
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  • Lightweight and compact design
  • Pneumatically balanced
  • Venturi free flow control
  • Anti freezing heat sink
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  • Combination octopus regulator/power inflator
  • Air balanced power inflator valve
  • Single hose configuration
  • Classic downstream regulator valve
$265.00 $239.95
$265.00 Save:  $25.05 (9%)
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Zeagle Octo-Z II

  • Combined BC power inflator/2nd stage octopus
  • Streamlines underwater profile
  • Downstream demand valve design
  • High flow inflator hose
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Regardless of which type of alternate air source you select, remember that its performance will depend on the ability of the regulator first stage to deliver air, particularly when it is supplying two second stages and a power inflator. The bottom lines: Given the type of diving you plan to do, how will it work for you in a worst-case scenario? How much risk are you willing to accept? If you dive solo, under demanding conditions or in overhead environments, the greater your need for a completely independent air source and a high-performance regulator as your alternate air source.
(Excerpt used from New Diver Magazine)