Using Spare Air
Spare Air puts emergency backup air within reach. Read your owner’s manual and practice using your unit in controlled conditions before you need it.

1 · Remove
Remove Spare Air from its holster.

2 · Clear & breathe
Place the mouthpiece in your mouth. Exhale sharply or press the purge button to clear the regulator before inhaling.

3 · Ascend
Breathe normally and begin a controlled ascent in accordance with your SCUBA training. Never hold your breath.
Spare Air is not a substitute for your primary SCUBA air supply, dive planning or training. Check pressure before every dive. If the unit is emptied underwater, refer to the manual for servicing before refilling.
Understand your available air
The current 3 cu ft diving models contain 85 liters of air; the 6 cu ft models contain 170 liters. Depth, breathing rate, exertion and stress affect duration. No fixed number of minutes or ascent depth applies to every diver.
View air capacity chartCompare modelsPractice with your setup
Confirm you can reach the unit and remove it from the holster. Practice deploying and breathing from it in controlled conditions, then refill before diving.
Read the owner’s manual · PDF
