Longines Flagship Heritage Moonphase L4.815.4.92.2
Ref. L4.815.4.92.2 · Sunray blue dial · In production
- Case38.5 mm
- Thick12.4 mm
- Lug-to-lug46.3 mm
- Water res.30 m
- MovementAutomatic
- CrystalSapphire
Longines Flagship Heritage Moonphase L4.815.4.92.2 size, specs and price at a glance
The Longines Flagship Heritage Moonphase L4.815.4.92.2 is 38.5 mm wide and 12.4 mm thick, with a lug-to-lug length of 46.3 mm. It takes 19 mm straps and ships on a alligator leather strap. Inside is the L899.5 automatic calibre, water resistant to 30 m. US list price: $3,450 when we last checked longines.com (3 Nov 2026).
Strap shopping? See our Longines lug width chart.
Overview
The Longines L4.815.4.92.2 is an everyday watch from the Heritage collection, part of the Flagship Heritage Moonphase family. It has a 38.5 mm stainless steel case, 12.4 mm thick, 46.3 mm from lug to lug. Longines lists the dial as sunray blue. Inside is an automatic movement (calibre L899.5) with 72 h of power reserve. You also get 30 m water resistance, a sapphire crystal and a alligator leather strap.
Who it suits
- Wrists of roughly 15.6–17.2 cm (6.1–6.8 in), by our Watch Finder sizing guide
- Desk and dress wear (keep it away from swimming)
Strengths
- Sapphire crystal resists scratches
- 72 h power reserve survives a weekend off the wrist
- Light at 74 g
Trade-offs
- Only 30 m water resistance: splash-proof, not for swimming
Written by Watch.co from the published specs below. These are not owner reviews.
Full specifications
Case
| Case diameter | 38.5 mm | longines.com · 3 Nov 2026 |
|---|---|---|
| Thickness | 12.4 mm | longines.com · 3 Nov 2026 |
| Lug-to-lug | 46.3 mm | longines.com · 3 Nov 2026 |
| Case material | Stainless steel | longines.com · 3 Nov 2026 |
| Crystal | Sapphire | longines.com · 3 Nov 2026 |
| Water resistance | 30 m | longines.com · 3 Nov 2026 |
| Weight | 74 g | longines.com · 3 Nov 2026 |
Dial
| Dial colour | Sunray blue | longines.com · 3 Nov 2026 |
|---|---|---|
| Date | Date | longines.com · 3 Nov 2026 |
| Moon phase | Yes | longines.com · 3 Nov 2026 |
Movement
| Movement type | Automatic | longines.com · 3 Nov 2026 |
|---|---|---|
| Calibre | L899.5 | longines.com · 3 Nov 2026 |
| Power reserve | 72 h | longines.com · 3 Nov 2026 |
Strap / Bracelet
| Bracelet / strap | Alligator leather strap | longines.com · 3 Nov 2026 |
|---|---|---|
| Lug width | 19 mm | longines.com · 3 Nov 2026 |
Other
| US list price (MSRP) | $3,450 | longines.com · 3 Nov 2026 |
|---|---|---|
| Production status | In production | longines.com · 3 Nov 2026 |
| Style (our classification) | Everyday | 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.
Longines Flagship Heritage Moonphase L4.815.4.02.2
Longines Flagship Heritage Moonphase L4.815.4.52.2
Longines Flagship Heritage Moonphase L4.815.4.62.2
Longines Flagship Heritage Moonphase L4.815.4.72.2
Longines Flagship Heritage Moonphase L4.815.4.78.2
More in Flagship Heritage Moonphase
Longines Conquest Heritage Central Power Reserve L1.648.4.52.2
Longines Conquest Heritage Central Power Reserve L1.648.4.62.2
Longines Conquest Heritage Central Power Reserve L1.648.4.78.2
Longines Conquest Heritage Central Power Reserve L1.648.4.92.2
Longines Conquest Heritage Central Power Reserve L1.648.4.92.6
Longines Conquest Heritage L1.649.4.02.2
Similar alternatives
Picked with Watch Finder's style tags and sizing.
Questions about the Longines Flagship Heritage Moonphase L4.815.4.92.2
How big is the Longines Flagship Heritage Moonphase L4.815.4.92.2?
The case is 38.5 mm wide, 12.4 mm thick and 46.3 mm from lug to lug.
What movement does the Longines Flagship Heritage Moonphase L4.815.4.92.2 use?
It uses the L899.5 calibre, a automatic movement with 72 h of power reserve.
Can I swim with the Longines Flagship Heritage Moonphase L4.815.4.92.2?
Not really. It is rated to 30 m.
Does the Longines Flagship Heritage Moonphase L4.815.4.92.2 have a date?
Yes, it shows the date.
How much is the Longines Flagship Heritage Moonphase L4.815.4.92.2?
The US list price was $3,450 on longines.com when we checked on 3 Nov 2026. Prices change, so check before you buy.
Will the Longines Flagship Heritage Moonphase L4.815.4.92.2 fit my wrist?
By our sizing guide it sits best on wrists of about 15.6–17.2 cm (6.1–6.8 in). Use the fit checker on this page to test your own wrist.
Watch.co is independent and not affiliated with any brand. Brand names are used only to identify products.