This equipment also suitable for children, see my other review about this:    • Fun Diving For Kids  
You can also the unboxing review:    • Unboxing Portable Scuba Gear - Mantus...  

WARNING: Appropriate Scuba certification/training required for safe use!

I use light and compact scuba gear, with 2,7 litre pony bottle. Cylinder has 3000 psi or 200 bar oxygen. This gear only use for recreational and usually carried by a scuba diver as an extension to the scuba set.
This is Mantus Anchor product (Mantus Scuba System) whic is designed to be compact, light and portable. All gears fits into a 50 litre backpack (dry bag).
This scuba gears allows you easy to manuver under water. I tried this gear on 30 feet or 10 meters under water for approximately 30 minute and there is still 100 bar left.
This gears beyond my expectations.