An Anchor System
Kumamoto was designed as a complete platform—end-links, clasp, and strap material engineered together for a seamless, integrated feel.
Kumamoto™ System
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Seamless at the Lugs
Purpose-built end-links create a clean, continuous line from case to strap/bracelet—no awkward gaps, no generic fit.
Double Flip-Lock Security
A firm, reassuring close with refined tolerances. Built to feel precise every time you lock in—on steel or on rubber.
Refined, Not Flashy
Tool watch energy with premium execution—clean edges, tight fit, and a finish that looks sharp without shouting.
Kumamoto ™ CTS End-Link Rubber Strap for Omega Seamaster Professional
Designed for the Omega enthusiast who demands integrated precision and everyday comfort, the Kumamoto ™ CTS End-Link Rubber Strap is a seamless upgrade for your current gen (42mm) Omega Seamaster. Inspired by the robust geometry of oyster-style bracelets, this strap features a solid, custom-molded end link that hugs the case for a cohesive OEM look—no gaps, no compromises.
Crafted from high-performance FKM rubber, the Kumamoto CTS offers superior durability, resistance to sweat, heat, and UV, and a soft-touch finish for all-day wear. The bracelet-style taper, subtle chamfering, and matching stainless steel deployant clasp bring a refined yet tool-ready aesthetic to your Omega.
Compatibility:
Current generation (2018-present) Omega Seamaster Professional 300m Diver models
Does not fit Titanium or Chronograph models including the NTTD.
Specs:
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Material: Premium FKM Rubber
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End Link: Custom molded end-links provided with purchase
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Width: 20mm at lugs, tapering to 16mm at the clasp
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Hardware: Brushed, corrosion resistant 316L stainless steel flip-lock deployant clasp
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Water- and sweat-resistant
Upgrade your Seamaster with a strap that wears like a bracelet and performs like a dive strap—built for those who appreciate purpose-driven design with a nod to the classics.
Customers praised this rubber strap as "exactly what I was looking for" with "fantastic quality" that pairs "wonderfully" with watches. The strap offers a comfortable fit with functional end-links and clasp. However, some noted the clasp's security tab "flops around" and finishing quality is just "OK for the price point."
Strap (positive)End-links (positive)Fit (positive)Quality (positive)Comfort (positive)
T
I was looking for a rubber strap for my Seamaster Diver 300M and I came across this one. Didn't take much research to decide this is the one and I love it.
T
Overall the strap is decent for the price. The only part I'm not crazy about is the security tap on the clasp, it gets in the way because it just flops around. The finishing isn't that great but OK for the price point.
B
This strap is great quality ! Well made ,comfortable with an easy functional clasp.I'm pretty tough on watches and this strap takes the worry out of scratching up my metal bracelet and it looks great with the Navy blue face .
S
Fantastic quality strap! The presentation box and materials that the product arrived in was also top notch.The CTS rubber strap is extremely comfortable and the end links really elevate the look of my watch.
F
Paired wonderfully with my Omega Seamaster.
A
Perfect fit
A
Perfect fit
