Yellow EDGE Nano Unbalanced Sport 2nd Stage with 40” Yellow Edge-Flex Hose.  Rugged and economical, this octopus is a great choice for a new diver’s rig. It can also be used with either Air or Nitrox up to 40 % right out-of-the-box. 
 
The sturdy ABS/Polycarbonate 2nd stage with Soft Push Silicone purge cover and soft bite mouthpiece weighs just 5.2 oz. and measures 3.25” by 2.5”. The small internal case dimensions results in an extremely low in water breathing effort.