Tested and approved, Spare Air is a totally self-contained 3000 psi (200 bars) 3.0 cu. ft. (85 liter), refillable backup air system that’s small and easy to use. It was designed to get you to the surface in the event of an emergency; yet, it is small enough to not even know you are wearing it! Spare Air is easy to use and maintain, just put it in your mouth and breathe. Kit includes easy refill adapter so you can fill directly off your own Scuba cylinder. So give yourself that extra edge of safety with Spare Air. The cylinder measures (L x Dia.) 13.4″ x 2.25″ (34 cm x 5.71 cm) and weighs 2.17 lbs. (985 g). Note: All Spare Air cylinders meet certificated specifications of the US Department of Transportation (DOT) with DOT-3AA specification and Transport Canada Safety and Security (TC) with TC-3AAM specifications. Spare Air comes with an owner’s manual, holster, and safety leash.
Cylinders never need to be hydro tested but the unit should be serviced annually along with your other scuba gear.