A watch band is a good gift: personal, useful, and not something most people buy enough of for themselves. It is also easy to get wrong, because band sizing depends on the exact watch and almost nobody knows their own off the top of their head.
Here is how to buy one without asking and ruining the surprise.
First, work out what watch they have
You need the brand and the model, and ideally the case size. A photo is usually enough, and most people have one on their phone already.
If you can get the watch in your hands for a minute, the model name is printed on the back of the case on most Fitbit, Garmin and Amazfit devices. On an Apple Watch it is engraved on the back, and also in Settings, General, About.
Then check whether the brand uses standard bands
This decides how careful you need to be.
Standard spring bars, meaning you only need the width: Garmin Quick Release models, Samsung Galaxy Watch, COROS, Amazfit, Suunto. For these, a 20mm or 22mm band fits regardless of brand.
Proprietary fittings, meaning you need the exact model: Apple Watch, Fitbit, Google Pixel Watch, Garmin QuickFit.
With the second group, close is not good enough. A Fitbit Inspire 2 band will not fit an Inspire 3, and a Pixel Watch band will not fit anything else at all.
The safest gift choices
Silicone, in a colour they do not own. Cheap enough that a mistake does not sting, universally useful, and works for the gym, swimming and sleep. The reliable option.
Magnetic mesh. The one metal band that does not need wrist sizing, because the clasp positions anywhere along it. That makes it the best-looking gift that still fits.
Woven nylon. Adjusts continuously, comes in more colours than anything else, and suits anyone who wears their watch all day.
What to avoid as a gift
Stretch bands and solo loops. They have no adjustment and are sized to the wrist, so you need a measurement you probably do not have.
Link bracelets. They need resizing with a tool before they can be worn, which turns a gift into a chore.
Leather, if they swim or train in the watch. Beautiful, and wrong for someone who never takes their watch off.
Matching the case finish
If you are buying something metal, match the hardware to the watch case: silver with silver or stainless, gold with gold, black with space grey or black.
If you cannot tell from a photo, silver and black are the safest, since they suit almost every case.
A note on wrist size
Most watch bands fit a wide range of wrists, so you rarely need a measurement. The exceptions are stretch bands, as above, and very small or very large wrists, where a long version may be needed.
If in doubt, mesh again: it covers the widest range of wrist sizes of any band type.
The cheat that always works
If you cannot identify the watch confidently, buy them two or three inexpensive silicone bands in different colours for the model you are fairly sure about, and keep the receipt. Returns on a cheap band are painless, and most people are pleased to have options.
Shop bands for Garmin, Apple Watch, Samsung Galaxy, Pixel Watch and Fitbit.
