Rugged Oxygen Generator

The ROG is a portable, lightweight oxygen generator that delivers 90 litres of medical grade oxygen for 15 minutes. Easy-to-use and small enough to carry in a backpack, the ROG gives immediate access to a life saving oxygen supply. 

ROG doesn't contain pressurised gas, so it's safe to use on battlefield (no danger of explosion when hit with bullet). ROG is maintenance-free.