V16 First Stage
Mares V16 First stage is the latest version of the balanced diaphragm regulator. In addition to all the characteristics that have made the success of this Mares product, including the DFC system, the V16 is also equipped with the now famous SCS (Spherical Core Seal) valve for longer life. The piston shuts off the flow of air by means of a highly durable titanium hemisphere, which is unassailable by oils or grease. The valve seat is made from a special high strength technopolymer. Two HP ports and four LP ports, pre-positioned for rational hose routing. The shock and scratch-resistant black coating is unique and makes the V16 the perfect companion for hundreds of dives.

MR12 first stage
The historic tried-and-tested first stage. A diaphragm design featuring the DFC (Dynamic Flow Control) system for dynamically balancing the pressure drop during the inhalation phase. Replaceable high-pressure valve seat in stainless steel. Chrome and nickel-plated body protected by a shockproof elastomer cover with a new design. Four LP low-pressure ports and two HP ports for connecting a pressure gauge or the transmitting unit of an air integrated computer.

Proton second stage
Light weight, ruggedness, high performance and simple construction. These are the distinguishing features of this brand new and ultra-compact second stage. Two-component body for a unique look, coupled with superior mechanical characteristics. Integrated VAD by-pass system, for effortless, natural breathing under all conditions. Coverplate with ultra-light alloy ring, anodized and incorporating the "mesh-grid" system for maximum performance.
"Super-soft" hose and a new orthodontic mouthpiece for unparalleled comfort. A sleek and distinctive look, controlled by just two mechanical buttons (Mares patent). Powered by two 1.5 Volt AAA batteries, easily obtainable anywhere in the world.

Traditional dive functions
Current depth / maximum depth achieved (on request)
Dive time
Remaining no-stop time at the current depth (no dec)
Decompression stop times
Total time to surface
Water temperature (on request)
Speed of ascent (expressed as a percentage of the maximum allowable ascent rate)
Value for CNS O2 LIMIT % (in the case of Nitrox dives)
Dive time in minutes and seconds (in bottom time mode)
Surface functions
Surface time
Logbook facility for storing 50 dives in memory
Profiles of the last 50 dives, at 20 seconds intervals (max 38 hours)
Desaturation time display (desat)
Time-to-fly (no fly)
Calendar clock
Air temperature
Self-check
Scrolling of no-stop times for planning repetitive dives
Dive simulator

Alarms
No decompression limit reached
Excessively rapid ascent
Omitted decompression stop
Low battery
Max permitted depth for the programmed PPO2 value (for Nitrox dives)
Special functions
Setting of Air/Nitrox/Bottom time programs
Setting of percentage O2 from 21% to 50%, in increments of 1%
Setting of PPO2 max from 1.2 to 1.6 bar
Infrared PC interface with possibility of printing the logbook
and the profile of each dive (optional)
Changing the units of measurement (m/feet - °C/°F)
4 manually selectable altitude programs
History of the total number of dives, the deepest dive logged, the lowest temperature measured underwater, and the total hours of diving
Display backlight, timed or permanently illuminated (using push-button controls)
No loss of memory during battery change
Percent ascent rate indicator
Function for clearing residual nitrogen memory
Function for disabling audible alarms
Fresh water / seawater setting (default fresh)
Function for disabling "uncontrolled ascent" feature
Function for selecting the program
Recording of dive errors in memory
Technical characteristics
Algorithm: with 11 tissues, of the exponential-deterministic type, with M values
(low bubble) derived from the studies of Rogers and Powell (modified Haldanean)
Display protected by scratch-resistant mineral glass
Two push-buttons for selecting functions (Mares patent)
Powered by two 1.5 volt AAA batteries
Quartz calendar clock
Maximum operating depth: 150 m /495 feet
Maximum depth of first decompression stop: 24 m / 80 feet
Operating temperature: from -10 to +50°C (14/122 °F)
Storage temperature: from -20 to +70°C (-4/+158 °F)