It is designed for water temperatures above 50º F (10º C)

The RK3 HD is available in four sizes: Small

perfect for the exploration diver with a large amount of equipment

or scaled down to make a travel friendly set up suitable for any diver

This compact first stage is a time-proven workhorse that has been embraced by the technical community around the world

mtx r sidemount set dive regulator AccessoriesSafety It is designed for waterThe MTX R sidemount set is a super tough, rugged, high performance, go anywhere sidemount regulator configuration designed to meet the rigours of cold water and extreme sidemount diving. The MTX R is highly reliable and also very easy to service out in the field which make it an ideal choice for the expedition and exploration diver.