Formex · Field Automatic
Field Automatic
The Formex Field Automatic Gen 2 is a 40mm Swiss-made field watch built from proprietary hardened grade-2 titanium, powered by a Sellita SW200-1 and fitted with sapphire crystals front and back — all priced under $1,000. Its modern two-part dial with recessed lume-filled stencil numerals and tool-free quick-release strap system set it apart from heritage-styled competition at this price bracket.
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Water res.
Thick
Lug-to-lug
Overview
| Brand | Formex |
| Reference | 0660.1.6525.877 |
| Collection | Field Automatic |
| Category | Field |
| Price guide | Mid-range · $600–900 |
Full specification
Specs
Case & dial
| Diameter | 40 mm |
| Lug-to-lug | 46.6 mm |
| Thickness | 10.6 mm |
| Lug width | 20 mm |
| Water resistance | 150 m |
| Crystal | sapphire crystal front and back, with anti-reflection treatment on the inside |
| Case material | grade 2 titanium, hardened to 900 HV |
| Bezel | fixed |
| Case back | exhibition |
Movement & furniture
| Type | Automatic |
| Caliber | Sellita SW200-1 → |
| Functions | Date |
| Power reserve | 41 h |
| Jewels | 26 |
| Lume | Super-LumiNova BGW09 Grade A |
| Strap / bracelet | nylon velcro strap; Italian leather with carbon deployant clasp optional |
Bottom line
A compelling value proposition in Swiss-made titanium at sub-$1,000 that rewards buyers who want genuine engineering and a contemporary design language over vintage-inspired military aesthetics.
Highlights
- Hardened grade-2 titanium case (900 HV surface hardness)
- Sapphire crystal front and back, AR-coated
- Swiss Made Sellita SW200-1, 26 jewels
- 150m WR with screw-down crown
- Tool-free quick-release straps; optional micro-adjust carbon deployant clasp
Who it's for
Buyers with roughly 6.5–7.5-inch wrists who want an everyday all-terrain Swiss-made tool watch that stays featherlight in outdoor conditions. The contemporary dial design and hardened titanium case appeal to those who prioritise engineering and modern execution over heritage styling.
Who should skip it
Skip it if you want a stainless-steel bracelet option, a traditional printed-chapter-ring field-watch dial, or a case under 39mm.
Before you buy
- Multiple color variants share a common reference base (0660.1.6xxx.xxx) — confirm exact dial color and full SKU at checkout
- Newer dual-layer Field Automatic variants and earlier sold-out one-piece/sandwich-dial variants are both listed by Formex as 40mm — verify exact dial construction, color, and SKU when buying second-hand
- Base price covers nylon velcro strap only; Italian leather strap with carbon deployant clasp adds approximately $125 USD
- Sold primarily direct via formexwatch.com; third-party retail availability is limited and stock rotates through pre-order cycles
FAQ
Is the Field Automatic automatic or quartz?
The Field Automatic is automatic. The Sellita SW200-1 winds itself from the motion of your wrist, so it needs no battery. A full wind holds roughly 41 hours, so it keeps running overnight off the wrist; left longer it stops and restarts once you wear or hand-wind it.
What movement does the Field Automatic use?
The Field Automatic is powered by the Sellita SW200-1 from Sellita, an automatic caliber with 26 jewels, a 41-hour power reserve, and a 28,800 bph beat rate. Being automatic, it winds from the motion of your wrist and needs no battery.
Does the Field Automatic have a date?
Yes — the Field Automatic has a date display on the dial. The date advances automatically as the movement runs, so the current day of the month is always visible at a glance, and you can set it from the crown after the watch has been left to stop.
How water resistant is the Field Automatic?
The Field Automatic is rated to 150 m. That covers swimming and snorkelling, though hot water and direct high-pressure water are best avoided, and it is not intended for scuba diving. Whatever the rating, avoid operating the crown or pushers underwater, and have the gaskets checked periodically to keep it reliable.
How big does the Field Automatic wear?
At 40 mm across with a 46.6 mm lug-to-lug and 10.6 mm thick, the Field Automatic wears as a modern medium-to-large watch. Lug-to-lug is the measurement that really decides fit, since it sets how far the case spans the wrist — 46.6 mm suits most wrists, and smaller wrists especially should check that figure.
How does the Formex Field Automatic compare to the Hamilton Khaki Field Automatic?
The Formex is lighter (titanium vs steel), thinner on the wrist due to dropped lugs, and carries a more avant-garde dial; Hamilton offers vintage-military aesthetics and much wider retail availability at a comparable price. Both are Swiss Made.
What changed between Gen 1 (2022) and Gen 2 (2025)?
The newer dual-layer Field Automatic variants use a redesigned two-part sunburst dial with new color options. Formex's own pages list both the newer dual-layer variants and earlier sold-out one-piece/sandwich-dial variants at 40mm, 10.6mm thick, 46.6mm lug-to-lug, and 54g case-only, with the Sellita SW200-1 movement carrying over.
Is the micro-adjust carbon deployant clasp worth the extra cost?
The patented 7mm fine-adjustment system lets you resize the fit on the fly without removing the watch — practical when layering over base layers in the field. Reviewers broadly consider it a genuine functional upgrade rather than a gimmick.
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