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Mares Proton 42 Metal Regulator
The lightest and most compact metal regulator
• Super-compact first stage• Maximum performance in the minimum space• Minimum breathing effortThe high performance and optimum hose placement of MR42T, combined with Proton Metal second stage with oversized purge button provides the ideal regulator for travel and for cold water diving.
First stage weight: 646g INT/452g YOKE
Second Stage Weight: 243g
Oil/Dry CWD kit Dry
Balanced Diaphram: Balanced diaphragm design
Nitrox: No
Number of HP ports: 2 HP 7/16" UNF ports
Number of LP ports: 4 LP 3/8" UNF ports
Inhale pressure: 10.92
Exhale pressure: 6.19
Ext work of breathing: 0.67
Inhale Work: 0.27
Pos inhale work: 0.03
Exhale work: 0.40
Volume depth of test: 50.5 msw (166 fsw)
Special characteristics: Certified to meet the EC Mark requirements in compliance with Directive 89/686/EEC reference standard UNI-EN250
So for I have only good things to say about this reg setup. I have been on about 50 dives so far with this regulator and haven't had a minutes trouble.