Spare Air Model 300

EAN: Air
Style: Standard Pressure Indicator
Sale price$420.00 USD
Re-stocking soon


A skydiver wears a reserve parachute, a SCUBA diver should have a reserve breathing system. For 40 years we’ve supplied divers with the smallest, most-compact redundant system available for out-of-air-emergencies. The patented SPARE AIR should be a standard piece of SCUBA diving equipment for the safety minded diver. In an out-of-air-emergency, why would you trust your life to anything else? Read stories from divers who are alive because of SPARE AIR. is the official Spare Air mini SCUBA tank website for divers, snorkelers, boaters, and any short term emergency air needs.


  • 3 cubic feet of air.
  • Tank finish in durable Anodized Black.
  • Easily refills from your own SCUBA tank with included refill adapter (patented).
  • Easily attaches to your BC with included holster and safety leash.
  • Small, hands-free, nearly neutrally buoyant.
  • Breathe on demand regulator - No complicated instructions.
  • Completely redundant back-up miniature SCUBA system.
  • Faster than buddy breathing and easier than an octopus.


Part Number: 300PK
Cylinder Capacity: 3 cu ft / 85 liters
Water Capacity: 30 cu in / .5 liters
Service Pressure: 3000 psi / 207 bar
Length: 13.4" / 34 cm
Diameter: 2.25" / 5.7 cm
Weight: 2.2 lb. / 1 kg
Cylinder Material: Aluminum - Black Anodized
Regulator Type: Balanced Single Stage
Surface Breaths*: 57
Manufactured: Made in USA
 *Based on 1.5 liters per breath

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