Better fit. Better wear.
WIS Watch Straps is proud to partner with Fitwell — bringing patented micro-adjust buckles to every WIS strap, so your fit is exactly right, all day.
Micro-adjust, in one motion.
Fitwell's patented micro-adjust gives you two fixed positions, 3mm apart. Loosen or tighten your fit in a single move — no tools, no guesswork.
Every part is machined to tolerances measured in microns, built to last a lifetime.
Keep the buckle you love.
The M4 adds micro-adjust to straps with a pin buckle or a deployant clasp, so you keep your existing hardware and gain a better fit. It installs in about two minutes with a spring bar tool.
Three finishes. One perfect fit.
M4 Natural Silver
A bright, classic finish that suits steel watches.
M4 Yellow Gold
Warm gold for dressier pieces.
M4 Black
Understated and sleek on darker straps.
Find your Fitwell size.
Hold your strap up to the screen to find the right buckle width. Most straps taper, so measure at the buckle end, not where the strap meets the watch.
M1 comes in 16, 18 and 20mm. M4 comes in 16, 18, 20 and 22mm.