Spare Air Xtreme 1.1 cu.ft. Sports Back Up Air Supply Package Only mini air system on the market with a proven design - over 200,000 systems sold since 1979, Tested and Approved by the US Navy. Unit comes empty and must be refilled. The Yoke Style Refill Adapter allows you to fill your SPARE AIR directly from any standard SCUBA tank. Spare Air Extreme Features Maximum Capcity: 1.1 cu. ft. / 31.15 liters Length: 7.25" / 18.42 cm Diamter: 2.25" / 5.71 cm Maximum Pressure: 3000 psi / 200 bar Weight (full): 1.23 lb / .58 kg Surface Breaths*: 20 (*based on 1.6 liter breath size) Water Volume: 12.7 cu. in. / .
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