
Guides
Guides & Comparisons
The how-to and the why. Strap sizing, brand comparisons, and the buying advice that feeds every pick on the site.
Roundups tell you what to buy. These guides tell you how to choose, how to measure, how to change a strap without scratching the lugs, and how the brands and categories actually compare. They are the reference layer under the money pages — and the lug width chart in particular is the tool the rest of the site is built around.
We earn a commission when you buy through our Amazon links, at no extra cost to you. It never affects our picks, and we say so when the cheaper watch is the better buy. How this works.
This hub is the reference desk. When a roundup says a watch is 22mm and points you at a strap, the guide that tells you how to confirm that number and swap the strap yourself lives here. When you are trying to decide between a dive watch and a field watch, or whether Seiko or the brand next to it is the better first automatic, the comparison lives here too.
Start with the lug width chart if you own a watch and want to buy a strap for it — it lists the width for dozens of popular models so you do not have to guess. Pair it with how to measure a watch strap and how to change a watch strap, and you never need to visit a watchmaker for a strap swap again. Those three guides together are a complete strap-sizing course, and they feed every strap page on the site.
The buying guides do the top-of-funnel work: the best affordable watch brands is the map of who makes what and where the value is, and the best automatic watches under $500 is the shortlist if you have decided you want a mechanical watch and a budget. Both link straight through to the category roundups where the individual models are ranked in full.
Everything here follows the same method we use everywhere: published specifications, the arithmetic shown rather than asserted, sources cited, and no claim of hands-on testing we cannot back. When we could not verify a spec, we write "data unavailable" instead of guessing. Read how we review for the full version.
Start here
Everything in this hub
All guides & comparisons
- Guide
Guide
Watch Lug Width Chart
The reference the whole site is built around: lug widths for dozens of popular models, plus how to measure your own in one minute.
- Guide
Guide
How to Measure a Watch Strap
The one-minute method for finding your watch's lug width and the right strap length, with nothing but a ruler.
- Guide
Guide
How to Change a Watch Strap
Change any strap yourself in minutes — the quick-release method and the spring-bar-tool method, without marking the case.

Roundup
The Best Affordable Watch Brands
The brand map: one flagship from Seiko, Citizen, Orient, Casio, Hamilton, Timex and more, so you can see where the value really is.
$300.00AmazonTop pick
Seiko 5 Sports SRPD91

Roundup
The Best Automatic Watches Under $500
Self-winding mechanical watches under $500, from a $99 diver to a domed-crystal dress piece — the best of the attainable automatic world.
$300.00AmazonTop pick
Seiko 5 Sports SRPD91

Comparison
Dive Watch vs Field Watch
The two most common first watches, compared on size, water resistance, versatility and price — with a clear pick for each kind of buyer.
$300.00AmazonTop pick
Seiko 5 Sports SRPD91