Fitwell Buckles
M1 Micro-Adjust Buckle
Fitwell M1 Stainless Steel Buckle
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Firm on purpose: it holds because changing it takes intent. Once you get used to it, you can adjust it on the wrist.
See the two-minute install ›Free US Shipping $50+. Free US Returns/Exchanges.
Add precise, half-hole micro-adjustment to your favorite watch straps. The Fitwell M1 replaces your existing pin buckle and doubles the number of usable fit positions - giving you a smooth 3mm “half-hole” adjustment.
If you’ve ever found your watch slightly too tight in warm weather or too loose in the cold, the M1 solves it instantly. No tools. No strap modification. Just a precision 316L stainless steel buckle engineered for daily comfort.
Features
- Compatible with most leather, rubber, or fabric straps
- Installs in place of your existing pin buckle - no modification needed
- Smooth 3mm adjustment, right between standard holes
- 316L Stainless steel buckle and tang with stainless-steel spring bar
- Includes one installed spring bar + one spare
Choosing Your Size
Your Fitwell M1 size is based on the width of your strap at the buckle - not the lug width of your watch.
If your strap is straight (non-tapered):
Select the M1 size that matches your lug width.
If your strap tapers toward the buckle:
Measure the width of your strap at the buckle end, or the inside width of your current buckle, using a ruler, tape measure, or caliper.
Choose the M1 size that matches that measurement.
Most tapered straps narrow by 2–4 mm.
Examples:
- A 20mm strap (at the lugs) tapering to 16mm → choose a 16mm M1
- A 22mm strap (at the lugs) tapering to 18mm → choose an 18mm M1
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Installation
Two minutes and a spring bar tool
Watch the install before you buy. The buckle or Link goes on with a spring bar tool, and nothing about your strap changes.
Replacing a buckle with the M1
M1 buckle replacement. About two minutes with a spring bar tool. Written steps
Collectors say
- 5 stars: 66 (80%)
- 4 stars: 10 (12%)
- 3 stars: 1 (1%)
- 2 stars: 2 (2%)
- 1 star: 3 (4%)
This product is a truly innovative and clever solution—it allows for fine-tuning the length of a standard pin-buckle watch strap (whether leather or canvas) to perfectly fit one's wrist. I purchased it and have been using it; it’s a great product!
Buckle is great quality with the advantage that allows adjustment of straps for a perfect fit. Can recommend this product.
Thank you for the kind words about the quality and for taking the time to recommend it. Really glad the adjustment is working well for you!
The buckle has never kept the adjustable spring bar in the second position on both sides and only clicks in on one side. I tried both included spring bars with the same issue. The buckle is pretty to look at but can’t be used for its intended purpose. Very disappointing.
Matt, thank you for letting us know. I'm sorry the spring bar won't hold in the second position on your buckle. That's not how it should work and speaks to a product defect. Please email me directly at info@fitwellbuckle.co so I can make this right personally. Tom
The finishing of the buckle is quite nice, but it doesn’t stay in the smaller position. There are a couple things at play here, I think; first, when putting the buckle in its smaller position, it creates such a little opening for a strap to fit through(pictured) that it will inevitably cause the buckle to slip out of the smaller position back into the larger position, due to tension from the strap. Second, the amount of tension within the mechanism is not enough to hold the buckle in the smaller position under most circumstances. Third, when trying to utilize the smaller position, it awkwardly angles the buckle up off the wrist at close to a 45 degree angle. It’s a nice idea but far from perfected execution.
I bought Citizen's Mandalorian-themed Eco-Drive a few weeks ago & was a bit unsatisfied with the way the leather & nylon strap fit. The metal-lined holes don't allow for any adjustment, and I could only get a too-loose or too-tight fit. Hyphens-are-fun!
I saw an ad for this buckle a week ago & it sounded like a possible solution, so I gave it a whirl. So far, it's performed admirably & keeps the watch from sliding around my wrist without being too tight. I simply have to adjust the buckle before removing the watch from my wrist so that it lengthens enough to let the tang pull away from the hole.
I don't know if this buckle's mechanism will loosen over time, but it's a very firm hold in either position. Very glad I decided to try this out.
I purchased the 16mm and it’s working amazing. Helps my watch fit without having to stretch to the next hole. Very easy to adjust when it’s off the wrist, and got to keep the band I liked.
Surprised no one else thought of this; great solution and so far it’s been worth the cost. Will likely buy another one down the line for a different size.
Bought the Fitwell Micro-Adjust buckle with a Black Baranil Signature strap for my Omega Seamaster. The strap was really well-made and the leather not only looks nice but also feels great. Glad I got the Micro Adjust Buckle too, it’s simple to use and is a great option if you are particular with the fit on your wrist. Nice produc indeed, thanks Delugs!
The micro adjust works perfect and looks great. i bought 3pc. And 0 regrets.
I understand the pricing because it is unique. But I do compare it with a good aftermarket butterfly clasp at €21,95 (I have 6) and this makes it difficult because butterfly looks more premium but no m-a,… you can’t have it all.
I have to much straps and for now I will use the different options as they have different benifits.
Give me a call if you have a butterfly with m-a at a reasonable price 😉
Buckle works as intended. In shortest position the pin of the buckle does not fit inside the groove of the buckle as it does in the longer setting. Due to the angle of the end of the pin the pin sticks up over the buckle in the short position. Does not affect function, but for a $40 buckle this should not be an issue. The concept is elegant, the execution could be more so.
Thank you for the feedback, and we are glad the buckle works as intended! Managing the 'overhang' of the pin while in the short position is challenging and usually has trade-offs (related to appearance vs. micro-adjustment travel). We have tired to go with a middle ground, but we will factor in your thoughts for our future product releases!
I love Fitwell buckles. I own nearly a dozen of them. They’re quite useful when you need a little breathing room with your strap but don’t need to move to the next hole. You shouldn’t sleep on the fact the buckles themselves are very good looking… my favorite being the titanium.
I cannot believe no one has ever thought of micro-adjustment for a basic watch buckle before. This is essential in getting the right fit when my wrist expands and contracts due to the weather. It is well-made, looks first class, and most importantly, works!
It's a great solution to a common problem, and at a great price. So far loving it!
This buckle is nothing short on ingenious. It does for straps what micro adjusts does for bracelets. Can't recommend these highly enough.
Good quality product. Looks good, function feels firm. But I would prefer buckle to be longer. When using a bit thicker strap, it don't sit naturally in the shorter position and it doesn't feel as comfortable as it could.
Mika, thank you for the feedback - it's helpful to hear. The M1 is sized to the most common strap thicknesses we see, but we understand it doesn't work for every setup. We'll be releasing the M2 in a few months, which will be a little longer for those thicker straps and tropic-style straps.
I love this adjustable buckle. My wrist grows and shrinks all day long. The Fitwell buckle allows me to wear my watch comfortably.
Sam, thank you for that. Really glad the M1 is keeping your watch comfortable as your wrist changes through the day - that's exactly what we built it for!
Buckle was a little hard to adjust at first. However after a few tries I got the hang of it. Does as it says allows me to adjust my watch strap as my wrist swells or contacts during the day. Would definitely buy again.
Joshua, thank you for sticking with it. You're right that the adjustment takes a few tries to get used to, but once you do it's firm and deliberate. Really glad it's working for you through the day!
Game changer!
Thank you for calling it a game changer. That's exactly what we set out to build - a real fix for the between-holes problem that's been around forever.
Nice product. Well made. Works great.
Vincent, thank you for your review! Really glad to hear it's working great for you and that the quality came through.
It fits very well, very comfortable
We're thrilled to hear that you're happy with the fit and comfort of the Fitwell M1 Stainless Steel Buckle! Thanks for sharing your experience.
Love it
So gald it works so well for you! Thanks for the feedback.
I was a little skeptical and I thought they were priced a little high. Then I bought one. Then I bought two more. Now I'm about to order another one, or two.
Hi Chris, we're thrilled to hear you're loving the Fitwell M1 Buckle! Thanks so much for your continued support and for sharing your experience!
Does exactly what it claims to do!
Allows that mid-hole point flexibility on the strap. Brilliant.
Thank you so much for your review! We're glad the buckle meets your expectations. Enjoy your Fitwell buckle!
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