Longines Spirit Flyback L3.821.4.53.6
Ref. L3.821.4.53.6 · Sunray black dial · In production
- Case42 mm
- Thick17 mm
- Lug-to-lug49.5 mm
- Water res.100 m
- MovementAutomatic
- CrystalSapphire
Longines Spirit Flyback L3.821.4.53.6 size, specs and price at a glance
The Longines Spirit Flyback L3.821.4.53.6 is 42 mm wide and 17 mm thick, with a lug-to-lug length of 49.5 mm. It takes 22 mm straps and ships on a bracelet. Inside is the L791.4 automatic calibre, water resistant to 100 m. US list price: $5,200 when we last checked longines.com (3 Nov 2026).
Strap shopping? See our Longines lug width chart.
Overview
The Longines L3.821.4.53.6 is a chronograph watch from the Spirit collection, part of the Spirit Flyback family. It has a 42 mm stainless steel case, 17 mm thick, 49.5 mm from lug to lug. Longines lists the dial as sunray black. Inside is an automatic movement (calibre L791.4) with 68 h of power reserve. You also get 100 m water resistance, a sapphire crystal and a bracelet.
Who it suits
- Wrists of roughly 16.8–18.7 cm (6.6–7.4 in), by our Watch Finder sizing guide
- Everyday wear including swimming
Strengths
- Sapphire crystal resists scratches
- Screw-down crown helps keep water out
Trade-offs
- Thick at 17 mm: harder to slide under a cuff
Written by Watch.co from the published specs below. These are not owner reviews.
Full specifications
Case
| Case diameter | 42 mm | longines.com · 3 Nov 2026 |
|---|---|---|
| Thickness | 17 mm | longines.com · 3 Nov 2026 |
| Lug-to-lug | 49.5 mm | longines.com · 3 Nov 2026 |
| Case material | Stainless steel | longines.com · 3 Nov 2026 |
| Crystal | Sapphire | longines.com · 3 Nov 2026 |
| Bezel | Bidirectional rotating | longines.com · 3 Nov 2026 |
| Water resistance | 100 m | longines.com · 3 Nov 2026 |
| Screw-down crown | Yes | longines.com · 3 Nov 2026 |
| Weight | 178.3 g | longines.com · 3 Nov 2026 |
Dial
| Dial colour | Sunray black | longines.com · 3 Nov 2026 |
|---|---|---|
| Chronograph | Yes | longines.com · 3 Nov 2026 |
Movement
| Movement type | Automatic | longines.com · 3 Nov 2026 |
|---|---|---|
| Calibre | L791.4 | longines.com · 3 Nov 2026 |
| Power reserve | 68 h | longines.com · 3 Nov 2026 |
Strap / Bracelet
| Bracelet / strap | Bracelet | longines.com · 3 Nov 2026 |
|---|---|---|
| Lug width | 22 mm | longines.com · 3 Nov 2026 |
Other
| US list price (MSRP) | $5,200 | longines.com · 3 Nov 2026 |
|---|---|---|
| Production status | In production | longines.com · 3 Nov 2026 |
| Style (our classification) | Chronograph | our classification |
Specs are summarised in our own words from the brand's product page. Each row links its source and the date we checked it. Fields we haven't verified are left out rather than guessed.
Variants with the same specs
Same case, movement and bracelet or strap; typically a different dial or finish.
More in Spirit Flyback
Similar alternatives
Picked with Watch Finder's style tags and sizing.
Questions about the Longines Spirit Flyback L3.821.4.53.6
How big is the Longines Spirit Flyback L3.821.4.53.6?
The case is 42 mm wide, 17 mm thick and 49.5 mm from lug to lug.
What movement does the Longines Spirit Flyback L3.821.4.53.6 use?
It uses the L791.4 calibre, a automatic movement with 68 h of power reserve.
Can I swim with the Longines Spirit Flyback L3.821.4.53.6?
Yes. It is rated to 100 m.
How much is the Longines Spirit Flyback L3.821.4.53.6?
The US list price was $5,200 on longines.com when we checked on 3 Nov 2026. Prices change, so check before you buy.
Will the Longines Spirit Flyback L3.821.4.53.6 fit my wrist?
By our sizing guide it sits best on wrists of about 16.8–18.7 cm (6.6–7.4 in). Use the fit checker on this page to test your own wrist.
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