Seiko Speedtimer vs Citizen World Chronograph

It sets itself from a radio time signal and handles world time across multiple zones, on Citizen's Eco-Drive. For frequent travelers that is a genuinely useful feature set no mechanical watch can match at any price.

Sapphire, 200m — twice the Seiko's rating — and Citizen's five-year warranty, the longest of any brand on this site.

It is a busy watch. 43mm across with a two-tone case and a crowded dial, a 23mm lug width that is even harder to buy straps for than the Seiko's 21mm, and Citizen publishes neither a lug-to-lug nor a thickness for it.

Sapphire, 200m, a perpetual calendar and a chronograph that runs on light — and a 23mm lug width, which is the least common strap size on this site. It is a module rather than a movement, so its long-term future depends on Citizen continuing to support the H800.

The V192 solar chronograph runs about six months fully charged and holds plus or minus 15 seconds a month. Sapphire, 100m, and a 41.4mm case with a published 45.9mm lug-to-lug at 13mm thick — genuinely compact for a chronograph.

The dial is the argument: a clean panda layout descended from Seiko's 1960s racing chronographs, with registers you can read at a glance. For timing anything in real life, this is the better instrument.

The 21mm lug width is the awkward part — odd sizes narrow every future strap purchase. Three years of warranty against Citizen's five.

Seiko lists V-series solar service at $163 — cheaper than a 4R36 overhaul and far cheaper than a mechanical chronograph. The 21mm lug width is the annoyance: standard straps come in 20 and 22.