This is the Mares DUAL 2S 1st and 2nd Stage Diving Regulator Features: 2S First Stage The 2S is a lightweight, robust and compact piston first stage. Equipped with a dedicated seat for RFID chips. The DIN300 first stage weighs 432g. The INT version weighs 608g. The sandblasted finish increases scratch resistance. Rover Second Stage The Rover second stage guarantees high performance, even after intensive use. The new large purge button features a &';dynamic hinge&'; design, which makes it easy to activate, even with a single finger. It also prevents free flow in the event of strong currents and is made of a durable rubber material that can withstand over 113,000 venting cycles. The patented Mares Vortex Assisted Design (VAD) system combined with the Fluid Dynamic Deflector (FDD) enables natural respiration at all depths. The Rover&';s combination of durability and performance make it the ideal regulator for intensive rental use. Includes a rubber hose. Dual 2S Specs MATERIAL - Ultralight Technopolymer FIRST STAGE - Piston FIRST STAGE WEIGHT INT - 608g / 21.4oz FIRST STAGE WEIGHT DIN - 432g / 15.2oz SECOND STAGE WEIGHT - 190g / 6.7oz TOTAL WEIGHT (G) INT - 977g / 34.5oz TOTAL WEIGHT DIN - 978g / 34.5oz HIGH PRESSURE PORTS - 1 HP 7/16" UNF Port LOW PRESSURE PORTS - 4 LP 3/8" UNF Ports HOSE TYPE - Rubber hose GAS USED - Air HOSE LENGTH - 80cm The Rover 2S is easy to maintain, with a sandblasted finish to increase scratch resistance. Reliable, lightweight and simple. The patented Vortex Assisted Design (VAD) system combined with the Fluid Dynamic Deflector (FDD) enables natural breathing at all depths. MANUALS User&';s Manual for Mares Regulators Languages: BG, CS, DA, DE, EL, EN, ES, ET, FI, FR, GA, HR, HU, IT, LT, LV, MT, NL, PL, PT, RO, RU, SK, SL, SV, TR