Details The Spare Air 300 with Dial Gauge package is a completely independent, compact emergency air system that was developed for divers to be able to take life-saving breaths during an ascent following an equipment failure or an out of air situation. The 300 package delivers nearly twice the capacity of the 170 package, making it more suitable for ascents from a deeper depth. The Spare Air can be attached to your BCD in a convenient and easy to reach location using the included holster and safety leash. It can be rapidly deployed and is instantly active, ready to deliver the first breathe when needed.. The system can also be quickly handed to your buddy or another diver in an emergency, leaving you free and unrestricted by hoses and safety holds to perform your emergency ascent. This Spare Air kit has been CE approved. Please be aware that there are copies of Spare Air products available from third-party sales platforms that state they are CE marked but have not actually been through the stringent testing procedure and therefore pose a safety risk. THE KIT INCLUDES: Spare Air 300 system Dial gauge Holster Safety leash Yoke cylinder filling adaptor We are the UK distributor for Spare Air. If you have any doubt about the authenticity or legitimacy of a product you have seen please contact us and we will investigate for you. Please note:Due to shipping restrictions all cylinders are shipped empty. FEATURES: 3.0 cubic feet of air. Tank finish in durable Anodised Black. Easily refills from your own SCUBA tank with included refill adaptor (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. SPECIFICATIONS: Maximum capacity: 3.0 cu ft / 85 litres Length: 13.4″ / 34cm Diameter: 2.25″ / 5.7cm Maximum pressure: 3000psi / 207bar Weight (full): 2.17lbs / 0.98kg Surface breaths*: 57 Water volume: 27cu in / 0.44 litres *Based on 1.5 litres per breath