Brand
Seiko has been making watches in Japan since 1881 and remains one of the few brands that manufactures its own movements at scale. The NH35 and NH36 automatic calibres power the 5 Sports line, offering solid accuracy and in-house serviceability for under $200. Higher up, Prospex diver and Presage dress collections use higher-beat movements with finer finishing — still at prices that undercut Swiss equivalents by a wide margin. If you want reliable mechanical watchmaking without paying the Swiss premium, Seiko is the obvious starting point.
Our top pick
Seiko SBDC055 (SPB071) Petty Special Edition Prospect Diver Review
4.5 / 5 · $650
6 Reviews
The Seiko SBDC055 is a 2018 Heritage Diver that perfectly balances classic 62 MAS design DNA with modern specifications, making it an ideal choice for larger wrists seeking genuine presence and legibility in a mid-tier diver.
The SNXS79's stock bracelet is genuinely terrible — cheap, stamped, and completely out of place on such a beautiful dial. This bracelet swap to a Jubilee from Long Island Watches fixes the watch's only real weakness and transforms it into something that looks and feels truly premium.
A hands-on test of an Amazon spring bar plier tool set used to swap the bracelet on a Seiko SBDC055 diver watch. The reviewer attempts both removal and reinstallation to evaluate the tool's effectiveness.
The Seiko 5 SNXS79 is still a remarkable deal in 2026 — its silver sunburst dial looks like a thousand-dollar watch at a fraction of the price. The bracelet is genuinely terrible and must be replaced, but get past that and you have one of the best value automatics ever made.
The Seiko Monster Prospex Save The Ocean features a stunning textured dial inspired by penguin footprints, delivering bold design and solid performance in a chunky tool watch. For the price point, it's a standout addition to the Monster lineup with exceptional dial artistry and robust everyday wearability.
The Seiko SSC549 is one of the most visually striking watches in the Prospex lineup — a deep blue solar chronograph with world time, sapphire crystal, and an orange/yellow accent palette that looks far more expensive than its price suggests.
Yes — Seiko is one of the few watchmakers that designs and manufactures its own movements at scale, which is unusual even among Swiss brands that often buy in movements from ETA or Sellita. That in-house control shows up as consistent reliability and easy serviceability across its lineup, from sub-$200 5 Sports pieces to higher-end Prospex divers.
The 5 Sports line runs the NH35 or NH36 — 24-jewel automatics with hacking and hand-winding. Prospex and Presage collections step up to higher-beat, more finely finished in-house calibres.
Substantially — a Seiko automatic diver with sapphire crystal and 200m water resistance typically costs a third to a fifth of a comparably specced Swiss equivalent, largely because Seiko avoids the Swiss labor and movement-sourcing costs baked into brands like Christopher Ward or Mido.