Longines Primaluna L8.123.4.97.6
Ref. L8.123.4.97.6 · Midnight blue mother-of-pearl dial · In production · Longines label: Women's
- Case30 mm
- Thick9.5 mm
- Lug-to-lug37 mm
- Water res.30 m
- MovementAutomatic
- CrystalSapphire
Longines Primaluna L8.123.4.97.6 size, specs and price at a glance
The Longines Primaluna L8.123.4.97.6 is 30 mm wide and 9.5 mm thick, with a lug-to-lug length of 37 mm. It takes 16 mm straps and ships on a bracelet. Inside is the L592.5 automatic calibre, water resistant to 30 m. US list price: $2,800 when we last checked longines.com (3 Nov 2026).
Strap shopping? See our Longines lug width chart.
Overview
The Longines L8.123.4.97.6 is a dress watch from the Elegance collection, part of the Primaluna family. It has a 30 mm stainless steel case, 9.5 mm thick, 37 mm from lug to lug. Longines lists the dial as midnight blue mother-of-pearl. Inside is an automatic movement (calibre L592.5) with 45 h of power reserve. You also get 30 m water resistance, a sapphire crystal and a bracelet.
Who it suits
- Wrists of roughly 12.4–13.6 cm (4.9–5.4 in), by our Watch Finder sizing guide
- Desk and dress wear (keep it away from swimming)
- Shirt cuffs and smarter dress codes
Strengths
- Sapphire crystal resists scratches
- Slim at 9.5 mm
- Compact 37 mm lug-to-lug suits smaller wrists
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 | 30 mm | longines.com · 3 Nov 2026 |
|---|---|---|
| Thickness | 9.5 mm | longines.com · 3 Nov 2026 |
| Lug-to-lug | 37 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 | 85 g | longines.com · 3 Nov 2026 |
Dial
| Dial colour | Midnight blue mother-of-pearl | longines.com · 3 Nov 2026 |
|---|---|---|
| Date | Date | longines.com · 3 Nov 2026 |
Movement
| Movement type | Automatic | longines.com · 3 Nov 2026 |
|---|---|---|
| Calibre | L592.5 | longines.com · 3 Nov 2026 |
| Power reserve | 45 h | longines.com · 3 Nov 2026 |
Strap / Bracelet
| Bracelet / strap | Bracelet | longines.com · 3 Nov 2026 |
|---|---|---|
| Lug width | 16 mm | longines.com · 3 Nov 2026 |
Other
| US list price (MSRP) | $2,800 | longines.com · 3 Nov 2026 |
|---|---|---|
| Production status | In production | longines.com · 3 Nov 2026 |
| Style (our classification) | Dress | 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.
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Questions about the Longines Primaluna L8.123.4.97.6
How big is the Longines Primaluna L8.123.4.97.6?
The case is 30 mm wide, 9.5 mm thick and 37 mm from lug to lug.
What movement does the Longines Primaluna L8.123.4.97.6 use?
It uses the L592.5 calibre, a automatic movement with 45 h of power reserve.
Can I swim with the Longines Primaluna L8.123.4.97.6?
Not really. It is rated to 30 m.
Does the Longines Primaluna L8.123.4.97.6 have a date?
Yes, it shows the date.
How much is the Longines Primaluna L8.123.4.97.6?
The US list price was $2,800 on longines.com when we checked on 3 Nov 2026. Prices change, so check before you buy.
Will the Longines Primaluna L8.123.4.97.6 fit my wrist?
By our sizing guide it sits best on wrists of about 12.4–13.6 cm (4.9–5.4 in). Use the fit checker on this page to test your own wrist.
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