How to Size a Watch Gift When You Don’t Know Their Wrist Size

To size a watch gift without knowing their wrist size, measure a watch or bracelet they already wear that fits well, then pick a watch whose clasp can adjust after it’s opened. Steel bracelets size by adding or removing links, so on a pre-owned piece, check that the listing says every link is included.

That covers most surprise gifts. Below: getting the measurement without them noticing, how much each clasp can absorb, and the one listing line that matters most when the watch is for someone else.

How do you find out someone’s wrist size without asking?

Measure something they already wear. The Brilliant Earth sizing guide says you can measure a bracelet that already fits well “by laying it flat and measuring its full length.” A watch works the same way. Open the clasp, lay the watch flat on a table, and measure its full length, case included, with a ruler or a soft tape. Write the number down in millimeters. A jeweler or watchmaker can work from it.

If they wear a leather strap, note which hole is worn and creased. That hole is their size on that strap, and you can measure from it to the buckle pin.

If there’s no watch to borrow, the same guide describes the direct method: wrap a flexible tape “just below the wrist bone,” keep it snug but not tight, and read where it meets its start. With no tape, use a piece of string or ribbon, mark where it overlaps, lay it flat and measure it. Or ask a partner, sibling or close friend who can borrow a watch for an afternoon.

When the number falls between two sizes, the guide says to choose the larger one for comfort. For a watch that’s also the safer error. A bracelet that’s a little loose can be taken in. One that’s too short can’t be worn.

How does a Rolex bracelet get sized?

By the links, then the clasp. Most steel bracelets come long and are shortened by removing links. The fine adjustment happens at the clasp, and Rolex uses two different systems depending on the model.

The Bob’s Watches bracelet guide says most Rolex references “add the Easylink 5 mm extension,” while “the Submariner and Sea-Dweller use the tool-free Glidelock instead.” Here is what each one does, according to the sources below:

For a gift, this table is the useful part. Glidelock adjusts in 2 mm steps up to 20 mm. Easylink adds about 5 mm. So Glidelock covers a larger measuring error, and if your measurement is rough, that clasp gives you more room.

The Submariner Date 126610LN we listed this year is a good example of what to look for. Its listing gives the case as 41mm and the bracelet as an “Oyster bracelet with Glidelock extension system,” and it answers one more question directly: “Full Bracelet Links? Yes.”

Why does “full bracelet links” matter on a pre-owned watch?

Because a bracelet can only get longer if the links still exist. A previous owner with a small wrist may have had links taken out. If those links didn’t come with the watch, the bracelet may be too short for a bigger wrist, and finding matching links later is a job of its own.

Our listings answer this on the line “Full Bracelet Links?” When you’re buying for someone else, read that line before anything else about the bracelet. A watch with every link can be fitted to almost any wrist. A watch without them only fits wrists up to its current length.

Ask about the full set too. Boxes, papers and spare links are separate questions, and our post on what “full set” means on a pre-owned watch goes through each one.

Does case size matter as much as wrist size?

It matters more, because a bracelet can be adjusted and a case can’t. Look at the watch they wear most and note its diameter. Then compare it with the listing, where the case size is in the title or the key features.

Size also decides the bracelet. The Bob’s Watches guide notes that “a 36 mm and a 41 mm Datejust take different bracelets,” so picking the smaller or larger model changes everything downstream, including how the watch sits on the wrist. The Datejust 126300 in the photo above is the 41mm version. Its listing names an “Oyster bracelet with Oysterclasp Easylink comfort extension” and also lists an original leather strap among the included items. A watch that comes with a second strap gives the person receiving it a choice from day one.

If you’re torn between sizes, stay close to the diameter they already wear. A gift is the wrong time to test whether someone wants to go 5mm bigger.

What happens if the watch doesn’t fit?

Get it sized by a jeweler or watchmaker. Our return policy says returns “are generally not accepted except in cases involving a significant discrepancy or a material omission in the item’s description,” and sourced pieces are not eligible for return at all. So plan on sizing with links and the clasp.

Removing or adding links is ordinary work for a jeweler or watchmaker. The PrestigeTime guide says the Easylink exists so you don’t have to visit “a watchmaker or jeweler every time your bracelet needs a small adjustment,” and it gives the reason: a wrist “expands and contracts with the fluctuation of humidity and temperature.”

One thing to do the day it arrives: open the box and compare the watch with its listing, including the links and any extra strap. We ask buyers to report anything that doesn’t match within 24 hours of delivery, so check first and wrap it after. The timing for Christmas orders is in how early to order a luxury watch for Christmas.

Can you try a watch on before buying it as a gift?

Yes, if you’re near Chicago. We work from a private office in Naperville by appointment, so you can see a watch in hand, judge its size against your own wrist, and look at the bracelet and links before you pay. If the person you’re buying for wears a similar size, bring their watch along to compare. Our How to buy page covers appointments and payment.

From anywhere else, ask for close-up photos or a video of the clasp and the bracelet before you buy, and send us the measurement you took. If the reference you want isn’t listed, put it on the Find me a watch page with the size you need.

Questions buyers ask

How do I measure my partner’s wrist for a watch without them knowing?

Borrow a watch or bracelet that fits them well, lay it flat, and measure its full length. If there isn’t one, a string wrapped just below the wrist bone and marked where it overlaps gives the same number.

What if I guess the wrist size wrong?

A jeweler or watchmaker can add or remove links, as long as the links are there. That’s why a pre-owned listing that says “Full Bracelet Links? Yes” is the safer choice for a surprise.

Which Rolex clasp is easiest to adjust after it’s given?

Glidelock, on the Submariner and Sea-Dweller. It moves in 2 mm steps up to 20 mm without tools, while the Easylink on most other models adds about 5 mm.

Can I return a watch gift that doesn’t fit?

The return policy limits returns to a significant discrepancy or material omission in the listing, and sourced pieces aren’t returnable. So plan on sizing a gift with links and the clasp.