The decision between the Longines Legend Diver and the Oris Divers Sixty-Five comes down to how you define a dive watch: as a technical tool or a daily‑wearable vintage aesthetic. The Longines is the more historically faithful super‑compressor reissue with 300 m water resistance and a silicon‑hairspring movement. The Oris prioritizes a slimmer case (40 mm or 36 mm) and an intuitive external bezel that fits better on average wrists. If you plan to dive or want the most authentic recreation, take the Longines. If you need a comfortable everyday diver that looks period‑correct, the Oris is the smarter choice.
Quick answer
- For scuba‑level water resistance and best heritage accuracy: Longines Legend Diver (300 m, internal bezel, L888.5 movement with silicon hairspring).
- For daily wear, fit on smaller wrists, and easier bezel operation: Oris Divers Sixty‑Five (40 mm or 36 mm, 100 m, external bezel, Sellita‑based movement).
- Price: Longines typically $2,200–$2,700; Oris $1,800–$2,400. The Oris also holds a stronger position in the used market under $1,500.
If you have a wrist circumference under 6.75 inches, the Oris will likely be more comfortable straight off the strap. Buyers who can try both on should start with the Oris for fit.
Comparison framework
| Feature | Longines Legend Diver | Oris Divers Sixty-Five |
|---|---|---|
| Case diameter | 42 mm | 40 mm (also 36 mm) |
| Water resistance | 300 m (30 bar) | 100 m (10 bar) |
| Movement | L888.5 (automatic, 64‑hour reserve, silicon hairspring) | Oris 733 (automatic, 38‑hour reserve, based on Sellita SW200‑1) |
| Bezel | Internal rotating (dual crowns) | External unidirectional (vintage thin profile) |
| Thickness | ~13.9 mm | ~12.8 mm (40 mm version) |
| Lug‑to‑lug | ~50 mm | ~48 mm (40 mm) |
| Crown | Two screw‑down crowns (time + bezel) | Single screw‑down crown |
| Crystal | Sapphire (domed) | Sapphire (domed with anti‑reflective coating) |
| Strap options | Leather, NATO, or steel bracelet | Leather, rubber, fabric, or steel bracelet |
| Exhibition caseback | No (solid with engraving) | No (solid on standard models) |
| Typical price range | $2,200–$2,700 (MSRP ~$2,700) | $1,800–$2,400 (MSRP ~$2,100–2,400) |
Top pick (technical / heritage): Longines Legend Diver — choose this if actual diving or a near‑authentic 1960s super‑compressor experience is your priority.
Top pick (daily wear / fit): Oris Divers Sixty‑Five — choose this if you have a wrist under 7 inches or want a lighter, thinner watch that wears like a vintage field piece.
Best-fit picks by use case
Diving or heavy water use: Longines Legend Diver
The Longines preserves the super‑compressor case intact: the internal bezel is operated by the upper crown, the lower crown sets the time. Because there is no fragile external bezel ring, the watch achieves 300 m water resistance without a disproportionate case height. The L888.5 movement runs at 25,200 vph, holds 64 hours of power reserve, and uses a silicon hairspring that resists magnetism — a clear advantage if you work near electronics or want better long‑term accuracy.
Where it can fail you: The 42 mm case with a 50 mm lug‑to‑lug is a straight‑sided block. On a wrist with a circumference under 6.75 inches, the lugs may overhang visibly. To verify fit, measure your wrist with a soft tape and compare to the lug‑to‑lug length; a 50 mm lug‑to‑lug typically requires a wrist of at least 6.75 inches for a flush fit. Also, the two‑crown system is not intuitive for everyday timing. If you need to set a timer quickly, you must unscrew the upper crown, pull it out, rotate the internal bezel, push it back in, and screw it down — a seven‑second process that the Oris can do in one second.
When to walk away: If you are buying this watch primarily as a desk diver and want to time eggs or parking meters, the internal bezel will become a daily annoyance. The solid caseback also means you never see the movement, which may disappoint if you enjoy watchmaking detail.
Daily wear and smaller wrists: Oris Divers Sixty-Five
Oris scaled down its original 42 mm Divers Sixty‑Five to 40 mm (and later 36 mm) while keeping the thin bezel and straight lugs. The result sits nearly flat on the wrist — about 12.8 mm thick — and slides under a shirt cuff without catching. The movement is a Sellita SW200‑1 (rebranded as Oris 733) with a 38‑hour power reserve. It is less advanced than the Longines but cheaper and faster to service at any local watchmaker.
Where it can fail you: The 100 m water resistance is adequate for swimming and snorkeling but not for recreational scuba diving beyond 30 m. The bezel is thinner than a modern diver’s bezel; if your hands are wet or gloved, grip is noticeably worse than the Longines’s internal crown operation. The lume on some early Sixty‑Five models was reported as weak, though recent versions have improved. Always check the lume under a bright light before buying used.
Fit verification: For the 40 mm version, the 48 mm lug‑to‑lug fits wrists down to about 6.25 inches without significant overhang. The 36 mm version (lug‑to‑lug ~44 mm) suits wrists under 6 inches. If you fall between sizes, try both on: the 36 mm wears like a vintage field watch, while the 40 mm feels modern.
The counter‑intuitive angle most articles skip
Common reviews rank the Longines higher because of its 300 m depth rating and “true” super‑compressor heritage. But in daily wear, the Longines’s bulk and bezel inconvenience make it less practical than the Oris for most owners. The Oris’s 100 m rating is perfectly sufficient for swimming, poolside, and most people’s lives — the extra 200 m is theoretical unless you actually dive. The Longines also requires a dedicated winding habit or a winder to keep the 64‑hour reserve topped off; the Oris’s shorter reserve means you can wear it every other day without issue. Real‑world usability often outweighs spec‑sheet superiority.
Trade-offs to know
- Bezel usability: The Longines internal bezel is excellent for dive planning (water‑ingress proof) but a chore for daily timing. The Oris external bezel is instant but thinner and harder to grip when wet.
- Movement service: The Longines L888.5 can only be serviced by Longines or authorized centers due to proprietary parts. The Oris 733 (SW200‑1) can be repaired by any competent watchmaker for $150–$250.
- Resale value: Longines Legend Divers typically sell used for $1,800–$2,000; Oris Divers Sixty‑Fives for $1,200–$1,600. The Oris loses less value as a percentage of MSRP if you buy new.
- Wrist presence: The Longines is a statement piece; the Oris disappears. If you want a watch that announces itself, choose the Longines. If you want a watch that blends in with casual wear, choose the Oris.
- Crown sensitivity: The Longines’s dual crowns can be accidentally unscrewed if you wear a jacket with tight cuffs. The Oris’s single crown is less vulnerable.
Related questions
Is the Longines Legend Diver too big for a 6.5‑inch wrist?
Yes, often. The 50 mm lug‑to‑lug can cause the lugs to hang over the edge of the wrist. Many owners with 6.5‑inch wrists find the Oris 40 mm or 36 mm far more balanced. Try both on if possible.
Can the Oris Divers Sixty-Five be used for actual scuba diving?
The 100 m water resistance is enough for recreational diving to 30 m, but the thin crown and non‑screw‑down bezel are not ideal for regular use. Most dive instructors would recommend a 200–300 m watch for frequent diving.
Which watch has a better movement?
The Longines L888.5 is technically superior: longer power reserve, silicon hairspring, better antimagnetism. The Oris 733 is simpler, easier to service, and reliable, but less advanced.
Will either watch fit under a dress shirt cuff?
The Oris 40 mm (12.8 mm thick) slides under most cuffs. The Longines (13.9 mm) is thicker; it works with looser cuffs but may bind on tight dress shirts.
How do I verify the fit before buying online?
Measure your wrist circumference with a flexible tape. For the Longines, if your wrist is under 6.75 inches, the lugs may overhang. For the Oris 40 mm, a wrist of 6.25 inches or larger works well. For the Oris 36 mm, wrists as small as 5.5 inches work. If possible, visit a retailer to test the crown action and bezel grip in person.
The We Know Watches editorial team brings together over 40 years of combined watch collecting, trading, and repair experience. Our editors have owned and handled watches from every major brand — from entry-level Seiko 5s to Rolex, Omega, Patek Philippe, and independent Swiss watchmakers. We’ve bought and sold at auction, worked with authorized dealers, visited manufacturing facilities in Switzerland and Japan, and serviced hundreds of movements ranging from the Seiko 7S26 to the Longines L888. Every guide and review we publish is based on hands-on experience, original research, and consultation with professional watchmakers. We do not accept payment for reviews, and we clearly disclose when we use affiliate links.