Each first stage has three medium pressure ports and one high pressure port

The XL4+ also makes an ideal stage regulator

but are constructed from super-tough Armoguard slick skin for increased abrasion resistance

Four medium-pressure ports all mounted on a rotating turret

increasing the temperature by an average of 2°C with equalization of heat from warmer areas to colder areas

rk4 dive fins AccessoriesSafety Each first stage has threeConserve energy with this compact, wide blade technical fin. Providing outstanding maneuverability in confined spaces and overhead environments, the RK4 also delivers optimum performance in open spaces. Suitable for use with both wetsuits and drysuits, the RK4 fins are perfect for frog kicking and back finning.