102 current Longines references are divers by style or rated to 300 m or more. These are the best on paper.
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How we picked
Each watch earns points from published specs only: sapphire crystal (2), water resistance of 200 m or ISO 6425 diver certification (2; 100 m earns 1), screw-down crown (1), power reserve of 70 hours or more (1), display caseback (0.5), hacking plus hand-winding (0.5) and lug-to-lug of 47 mm or less (0.5). We rank by points, then by lower US list price. Near-identical colourways are grouped and we show the lowest-priced one. We cap each model family at two picks so the list isn't one watch in six colours.
The Longines L3.764.4.06.9 is a diver watch from the Heritage collection, part of the Legend Diver family. It has a 39 mm stainless steel case, 12.7 mm thick, 47 mm from lug to lug. Longines lists the dial as green lacquered polished. Inside is an automatic movement (calibre L888.6) with 72 h of power reserve. You also get 300 m water resistance, a sapphire crystal and a rubber strap.
Good for: Wrists of roughly 15.9–17.4 cm (6.2–6.9 in), by our Watch Finder sizing guide; Swimming, snorkelling and diving.
Why it's here
Sapphire crystal resists scratches
300 m water resistance
Screw-down crown helps keep water out
72 h power reserve survives a weekend off the wrist
Full specs and fit checkSearch AmazonUS list price $3,500 (US list) (brand site, checked 3 Nov 2026). Longines listings on Amazon usually come from third-party sellers, not the brand. Check who the seller is and what warranty you get before you buy. Amazon links are paid links.
The Longines L3.742.4.56.6 is a diver watch from the Conquest collection, part of the Hydroconquest family. It has a 41 mm stainless steel case, 11.9 mm thick, 51.1 mm from lug to lug. Longines lists the dial as sunray black. Inside is an automatic movement (calibre L888.5) with 72 h of power reserve. You also get 300 m water resistance, a sapphire crystal and a bracelet.
Good for: Wrists of roughly 17.3–18.3 cm (6.8–7.2 in), by our Watch Finder sizing guide; Swimming, snorkelling and diving.
Why it's here
Sapphire crystal resists scratches
300 m water resistance
Screw-down crown helps keep water out
72 h power reserve survives a weekend off the wrist
Trade-offs
Long 51.1 mm lug-to-lug can overhang smaller wrists
Full specs and fit checkSearch AmazonUS list price $1,600 (US list) (brand site, checked 3 Nov 2026). Longines listings on Amazon usually come from third-party sellers, not the brand. Check who the seller is and what warranty you get before you buy. Amazon links are paid links.
The Longines L3.841.4.56.6 is a diver watch from the Conquest collection, part of the Hydroconquest family. It has a 44 mm stainless steel case, 11.9 mm thick, 54.7 mm from lug to lug. Longines lists the dial as sunray black. Inside is an automatic movement (calibre L888.5) with 72 h of power reserve. You also get 300 m water resistance, a sapphire crystal and a bracelet.
Good for: Wrists of roughly 18.5–19.6 cm (7.3–7.7 in), by our Watch Finder sizing guide; Swimming, snorkelling and diving.
Why it's here
Sapphire crystal resists scratches
300 m water resistance
Screw-down crown helps keep water out
72 h power reserve survives a weekend off the wrist
Trade-offs
Long 54.7 mm lug-to-lug can overhang smaller wrists
Full specs and fit checkSearch AmazonUS list price $1,600 (US list) (brand site, checked 3 Nov 2026). Longines listings on Amazon usually come from third-party sellers, not the brand. Check who the seller is and what warranty you get before you buy. Amazon links are paid links.
The Longines L3.779.4.98.6 is a diver watch from the Conquest collection, part of the Hydroconquest Exclusive Edition family. It has a 39 mm stainless steel case, 11.7 mm thick, 48.1 mm from lug to lug. Longines lists the dial as frosted blue sunray. Inside is an automatic movement (calibre L888.5) with 72 h of power reserve. You also get 300 m water resistance, a sapphire crystal and a bracelet.
Good for: Wrists of roughly 16.2–17.4 cm (6.4–6.9 in), by our Watch Finder sizing guide; Swimming, snorkelling and diving.
Why it's here
Sapphire crystal resists scratches
300 m water resistance
Screw-down crown helps keep water out
72 h power reserve survives a weekend off the wrist
Trade-offs
None stood out in the published specs
Full specs and fit checkSearch AmazonUS list price $2,200 (US list) (brand site, checked 3 Nov 2026). Longines listings on Amazon usually come from third-party sellers, not the brand. Check who the seller is and what warranty you get before you buy. Amazon links are paid links.
The Longines L3.788.4.98.6 is a diver watch from the Conquest collection, part of the Hydroconquest Exclusive Edition family. It has a 42 mm stainless steel case, 11.7 mm thick, 51.2 mm from lug to lug. Longines lists the dial as frosted blue sunray. Inside is an automatic movement (calibre L888.5) with 72 h of power reserve. You also get 300 m water resistance, a sapphire crystal and a bracelet.
Good for: Wrists of roughly 17.3–18.7 cm (6.8–7.4 in), by our Watch Finder sizing guide; Swimming, snorkelling and diving.
Why it's here
Sapphire crystal resists scratches
300 m water resistance
Screw-down crown helps keep water out
72 h power reserve survives a weekend off the wrist
Trade-offs
Long 51.2 mm lug-to-lug can overhang smaller wrists
Heavy at 180 g
Full specs and fit checkSearch AmazonUS list price $2,200 (US list) (brand site, checked 3 Nov 2026). Longines listings on Amazon usually come from third-party sellers, not the brand. Check who the seller is and what warranty you get before you buy. Amazon links are paid links.
The Longines L3.779.4.09.9 is a diver watch from the Conquest collection, part of the Hydroconquest 2026 Commonwealth Games family. It has a 39 mm stainless steel case, 11.7 mm thick, 48.1 mm from lug to lug. Longines lists the dial as teal gradient lacquered polished. Inside is an automatic movement (calibre L888.5) with 72 h of power reserve. You also get 300 m water resistance, a sapphire crystal and a rubber strap.
Good for: Wrists of roughly 16.2–17.4 cm (6.4–6.9 in), by our Watch Finder sizing guide; Swimming, snorkelling and diving.
Why it's here
Sapphire crystal resists scratches
300 m water resistance
Screw-down crown helps keep water out
72 h power reserve survives a weekend off the wrist
Trade-offs
None stood out in the published specs
Full specs and fit checkSearch AmazonUS list price $2,400 (US list) (brand site, checked 3 Nov 2026). Longines listings on Amazon usually come from third-party sellers, not the brand. Check who the seller is and what warranty you get before you buy. Amazon links are paid links.
The Longines L3.774.4.30.2 is a diver watch from the Heritage collection, part of the Legend Diver family. It has a 42 mm stainless steel case, 12.7 mm thick, 52.6 mm from lug to lug. Longines lists the dial as beige. Inside is an automatic movement (calibre L888.5) with 72 h of power reserve. You also get 300 m water resistance, a sapphire crystal and a nylon strap.
Good for: Wrists of roughly 17.8–18.7 cm (7.0–7.4 in), by our Watch Finder sizing guide; Swimming, snorkelling and diving.
Why it's here
Sapphire crystal resists scratches
300 m water resistance
Screw-down crown helps keep water out
72 h power reserve survives a weekend off the wrist
Trade-offs
Long 52.6 mm lug-to-lug can overhang smaller wrists
Full specs and fit checkSearch AmazonUS list price $2,850 (US list) (brand site, checked 3 Nov 2026). Longines listings on Amazon usually come from third-party sellers, not the brand. Check who the seller is and what warranty you get before you buy. Amazon links are paid links.
The Longines L3.790.4.56.9 is a diver watch from the Conquest collection, part of the Hydroconquest Gmt family. It has a 41 mm stainless steel case, 12.9 mm thick, 49.4 mm from lug to lug. Longines lists the dial as sunray black. Inside is an automatic movement (calibre L844.5) with 72 h of power reserve. You also get 300 m water resistance, a sapphire crystal and a rubber strap.
Good for: Wrists of roughly 16.7–18.3 cm (6.6–7.2 in), by our Watch Finder sizing guide; Swimming, snorkelling and diving; Frequent travellers who track two time zones.
Why it's here
Sapphire crystal resists scratches
300 m water resistance
Screw-down crown helps keep water out
72 h power reserve survives a weekend off the wrist
Full specs and fit checkSearch AmazonUS list price $3,150 (US list) (brand site, checked 3 Nov 2026). Longines listings on Amazon usually come from third-party sellers, not the brand. Check who the seller is and what warranty you get before you buy. Amazon links are paid links.
Questions
Which is the cheapest watch in this guide?
The Longines Hydroconquest L3.742.4.56.6, at a US list price of $1,600 when we checked.
How did you choose these watches?
We ranked them on published specs only, using the scoring rules on this page. We haven't reviewed or worn these watches for this guide, and no brand or retailer paid to be included.
Which of these can I swim with?
Longines Legend Diver L3.764.4.06.9, Longines Hydroconquest L3.742.4.56.6, Longines Hydroconquest L3.841.4.56.6, Longines Hydroconquest Exclusive Edition L3.779.4.98.6, Longines Hydroconquest Exclusive Edition L3.788.4.98.6, Longines Hydroconquest 2026 Commonwealth Games L3.779.4.09.9 are rated to 100 m or more.
Do you earn money from these links?
Amazon links are paid links: as an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Links to brand sites and eBay are not affiliate links.
