Check the listing for details. USED Spare Air 3000 3.0 Kit. Condition: Used. Listed at 249.75 USD. USED Spare Air 3000 3.0 Kit SPARE AIR is the smallest redundant SCUBA system available with enough air to get you to the surface in an out-of-air emergency. The patented SPARE AIR should be a standard piece of SCUBA diving equipment for the safety minded diver. Explore the wealth of information about our product and diving in general. · Completely redundant alternate air source: safety back-up air supply · Many advantages over standard alternate air source, allows self-rescue in emergency out-of-air-situation · 3000 PSI (200 bars) 3.0 cu. Ft. (85 liter) of outstanding, refillable backup air system, small and easy to use · Designed to get-you-to-surface in event of an emergency, easy-to-use and maintain, just put-in-mouth and breathe · Cylinder dimensions: (L x Dia.) 13.4" x 2.25" (34cm x 5.71cm) - weight: 2.17 lbs. (985 g) Included in the box: · Cylinder · First stage w/mouthpiece (not attached for shipping) · Fill Adapter · Carry Bag w/ Cap and Tether · In original box Current hydro. With all life supporting gear it is highly recommended having unit serviced prior to use.