The R195 OCTO is an economical second stage featuring classic downstream valve technology, which has earned a well-deserved reputation for safety and reliability. The R195 OCTO is designed to be extremely easy to use in an emergency. For safe and straightforward use, it is pre-adjusted to the optimal inhalation volume. You never have to worry about control knobs or switches; just put it in your mouth and breathe. The R195 OCTO comes with a highly visible yellow cover and a 1-meter yellow hose, making it much easier to share air with a buddy in need. Thanks to the reversible hose attachment, it is also a versatile second stage for use on stages.