CRITICAL MASS is a masterpiece of timekeeping. With its distinctive sculpted case and unidirectional timing bezel, it is a perfect combination of beauty and aesthetic proportion. Reactor's extreme construction makes Critical Mass ready to go anywhere.

FEATURES .......(click for more details)
• Solid 316L stainless steel construction
• Secure screw bar case-to-band interface
• Superluminova hands & dial markings
• Triple o-ring screw-down crown system
• 200M depth tested

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SPECIFICATIONS ...................
• Case diameter: 39.9mm
• Thickness: 12.65mm
• Weight: 198 grams
• Width at lug: 22.6mm
• Width at clasp: 22mm


• Full size case.

• Durable chronograph or day/date quartz movement for exceptional accuracy.

• Patented high-energy Superluminova dial markings provide up to 8 hours of readability in low light conditions.

• Solid marine-grade 316L stainless steel construction provides unequaled durability and corrosion resistance for hassle-free performance.

• Triple O-ring screw down crown and crown protector provide unsurpassed water resistance and protection to the fragile crown stem.

• Secure “screw bar” case-to-band interface provides 5 to 7 times the strength of traditional spring bars.

• Uni-directional rotating timing bezel.

• Thick, forged caseback with integrated O-ring provides superior water resistance.

• Highly scratch resistant hardened mineral glass crystal insures the highest degree of shatter resistance.

• Solid 316L stainless steel band with triple secure clasp system.

• Depth rated to 200M (20ATM). Every Reactor watch is individually tested to its rated depth.