This thread is for the typical case: you take out a link and it is loose, you leave it in and it pinches. The solution is usually in the clasp, not in the bracelet.
Wikipedia (article “Watch strap”) calls the folding clasp folding clasp or deployant clasp, and shows a steel clasp with 6 micro-adjust holes, another with a diver extension, and Rolex’s Glidelock. The steps below come from the instructions Seiko publishes for its clasps. For removing links, the reference thread is How to size a bracelet without scratching it.
[[PHOTO: cierre desplegable abierto visto de lado, con la fila de agujeros de microajuste y el pasador marcados en color]]
Editorial summary, not independently verified.
A small table of what I usually see in photos:
| Type |
You recognise it by |
| Clasp with holes |
a row of holes on the side |
| Easy adjust with a push button |
buttons on both sides of the clasp |
| Tip that folds in (diver type) |
the tip of the strap drops inwards |
Does each one adjust differently?
Yes. First, the triple clasp with adjustment holes, per Seiko’s page “How to use an adjustable three-fold clasp”:
- Press the buttons on both sides of the flap and pull the strap out of the moving loop and the fixed one. Open the clasp.
- Press the buttons again to release the flap.
- Take the pin out of the adjustment hole, slide the strap to the right length and put the pin in the new hole.
- Close the flap.
Seiko notes that the illustrations are examples and that some details change by model. Note: if the clasp “does not close well” after the change, the first thing to check is whether the pin has gone all the way into the hole.
The second type is the easy adjust with a push button. Per the Seiko manual for calibre 5X63:
- A light press of the buttons opens the clasp.
- Pressing firmly (all the way) works the adjuster, which lengthens the strap by up to about 5 mm, in 2 steps.
- With the clasp closed, you can take back what the adjuster has lengthened.
Watch the myth: it is not a micro-adjust for shortening. Per Seiko, it is for giving slack when the strap pinches or feels uncomfortable for some reason.
The third is the triple diver-type clasp with a tip, which Seiko uses on rubber straps and on some leather ones. Per its instruction sheet:
- Open the clasp by pressing the buttons on both sides.
- Take the pins out of the adjustment holes at both points.
- Slide the strap left and right and, at the right length, push the pins in firmly into the holes, again at both points.
It is like fastening ski boots: if one buckle is only halfway, everything is only halfway.
[[PHOTO: correa de caucho con cierre tipo buceo, los dos pasadores fuera de sus agujeros y flechas que indican el deslizamiento de la correa]]
And Glidelock and the Rolex systems?
They are another world, with their own thread: Oyster and Jubilee bracelets, clasp, Glidelock and Easylink. Here only the generic types.
Final check, for any clasp:
- Pin seated on both sides of the hole (visible in a side photo).
- A gentle pull test with the clasp closed: it should not open or make a noise.
- Symmetry: the clasp sits centred under the wrist.
If after all this it still does not sit right and the bracelet is made of links, it helps to know what holds each link before touching anything: screw, split pin or tube.
Summary:
- Between two link sizes, the adjustment is made on the clasp.
- Clasp with holes: buttons, pull the strap out of the loops, release the flap, move the pin to another hole, close (Seiko).
- Easy adjust with a push button: a light press opens; a firm press lengthens by up to about 5 mm in 2 steps; you can take it back with the clasp closed (Seiko 5X63).
- Diver type with a tip: take the pins out and put them back at both points (Seiko sheet).
- Rolex (Glidelock and similar): see the dedicated thread.
- Always: pin seated, pull test, clasp centred.
Details change by model; the manual for the specific model is what counts.
Editorial summary, not independently verified.
Perfect. I will keep the table in post 2 and the pull test in 7.