Longines Hydroconquest L3.369.3.12.7
Ref. L3.369.3.12.7 · White matt dial · In production · Longines label: Women's
- Case30 mm
- Thick9.55 mm
- Lug-to-lug37.8 mm
- Water res.300 m
- MovementQuartz
- CrystalSapphire
Longines Hydroconquest L3.369.3.12.7 size, specs and price at a glance
The Longines Hydroconquest L3.369.3.12.7 is 30 mm wide and 9.55 mm thick, with a lug-to-lug length of 37.8 mm. It takes 16 mm straps and ships on a bracelet. Inside is the L152.3 quartz calibre, water resistant to 300 m. US list price: $1,750 when we last checked longines.com (3 Nov 2026).
Strap shopping? See our Longines lug width chart.
Overview
The Longines L3.369.3.12.7 is a diver watch from the Conquest collection, part of the Hydroconquest family. It has a 30 mm stainless steel case, 9.55 mm thick, 37.8 mm from lug to lug. Longines lists the dial as white matt. Inside is a quartz movement (calibre L152.3). You also get 300 m water resistance, a sapphire crystal and a bracelet.
Who it suits
- Wrists of roughly 12.7–13.6 cm (5.0–5.4 in), by our Watch Finder sizing guide
- Swimming, snorkelling and diving
- Shirt cuffs and smarter dress codes
- Grab-and-go wear without winding or setting
Strengths
- Sapphire crystal resists scratches
- 300 m water resistance
- Screw-down crown helps keep water out
- Slim at 9.55 mm
- Compact 37.8 mm lug-to-lug suits smaller wrists
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 | 9.55 mm | longines.com · 3 Nov 2026 |
| Lug-to-lug | 37.8 mm | longines.com · 3 Nov 2026 |
| Case material | Stainless steel | longines.com · 3 Nov 2026 |
| Crystal | Sapphire | longines.com · 3 Nov 2026 |
| Bezel | Unidirectional rotating | longines.com · 3 Nov 2026 |
| Water resistance | 300 m | longines.com · 3 Nov 2026 |
| Screw-down crown | Yes | longines.com · 3 Nov 2026 |
| Weight | 101 g | longines.com · 3 Nov 2026 |
Dial
| Dial colour | White matt | longines.com · 3 Nov 2026 |
|---|---|---|
| Date | Date | longines.com · 3 Nov 2026 |
Movement
| Movement type | Quartz | longines.com · 3 Nov 2026 |
|---|---|---|
| Calibre | L152.3 | 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) | $1,750 | longines.com · 3 Nov 2026 |
|---|---|---|
| Production status | In production | longines.com · 3 Nov 2026 |
| Style (our classification) | Diver | 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 Hydroconquest L3.369.3.18.7
Longines Hydroconquest L3.369.3.87.7
Longines Hydroconquest L3.369.3.88.7
Longines Hydroconquest L3.369.4.09.6
Longines Hydroconquest L3.369.4.12.6
Longines Hydroconquest L3.369.4.87.6
More in Hydroconquest
Longines Hydroconquest L3.742.3.56.7
Longines Hydroconquest L3.742.3.96.7
Longines Hydroconquest L3.742.4.56.6
Longines Hydroconquest L3.742.4.96.6
Longines Hydroconquest L3.769.3.56.7
Longines Hydroconquest L3.769.3.58.7
Similar alternatives
Picked with Watch Finder's style tags and sizing.
Questions about the Longines Hydroconquest L3.369.3.12.7
How big is the Longines Hydroconquest L3.369.3.12.7?
The case is 30 mm wide, 9.55 mm thick and 37.8 mm from lug to lug.
What movement does the Longines Hydroconquest L3.369.3.12.7 use?
It uses the L152.3 calibre, a quartz movement.
Can I swim with the Longines Hydroconquest L3.369.3.12.7?
Yes. It is rated to 300 m.
Does the Longines Hydroconquest L3.369.3.12.7 have a date?
Yes, it shows the date.
How much is the Longines Hydroconquest L3.369.3.12.7?
The US list price was $1,750 on longines.com when we checked on 3 Nov 2026. Prices change, so check before you buy.
Will the Longines Hydroconquest L3.369.3.12.7 fit my wrist?
By our sizing guide it sits best on wrists of about 12.7–13.6 cm (5.0–5.4 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.