Photo: Tempus Shop
Catalogue / Longines / ref. L3.782.3.56.9
Longines HydroConquest 43mm Noir Caoutchouc Alt - L3.782.3.56.9
The Longines HydroConquest 43mm Noir Caoutchouc Alt is an automatic watch, 43 mm across, water-resistant to 300 m. It was listed at €2,200 at Tempus at our check on 12 November 2026.
Where to buyChecked 12 November 2026
The button leads to today’s price. Affiliate link: the retailer pays us a commission, at no extra cost to you.
Who it suits
Anyone who swims, dives or wants a watch that never needs babying.
Strengths
Automatic movement · Water-resistant to 300 m · Priced below the brand median
Limits
43 mm diameter
Reading the spec sheet
What the spec sheet says
- Automatic movement. It winds itself on the wrist, with no battery.
- Water-resistant to 300 m. Swimming and diving without a second thought.
- Priced below the brand median. It costs 20% less than the median of the 383 automatic Longines watches in the catalogue (€2,750).
- 43 mm diameter. A large case, worth trying on first if your wrist is slim.
Analysis based on the retailer’s spec sheet, without handling the watch.
- Brand
- Longines
- Case material
- Stainless steel, ceramic bezel
- Strap material
- Rubber
- Diameter
- 43 mm
- Movement
- Automatic
- Water resistance
- 300 m (30 bar)
- Dial colour
- Sunray black
- Clasp
- Double-safety folding clasp, push-button release
- Reference
- L3.782.3.56.9
At this price
Alternatives from other brands
Same type of movement, within 20% of the price.
Questions
The short answers
Is the Longines HydroConquest 43mm Noir Caoutchouc Alt an automatic watch?
Yes. Its movement is automatic: it winds itself with the motion of the wrist.
Can you swim with the Longines HydroConquest 43mm Noir Caoutchouc Alt?
Yes. It is water-resistant to 300 m, which covers swimming and diving.
What size is the Longines HydroConquest 43mm Noir Caoutchouc Alt?
Its case measures 43 mm in diameter.
How much does the Longines HydroConquest 43mm Noir Caoutchouc Alt cost?
It was listed at €2,200 at Tempus at our check on 12 November 2026.
Where it ranks
This watch appears in
Official brand video
The collection on video
Same brand
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