






HYDROCONQUEST
WATCHES
|
Wrist Size |
Watch Case Diameter |
Watch Case Thickness |
Strap Thickness |
|
13cm (5 inches) |
29mm - 32mm |
Below 10mm |
14.5mm - 16mm |
|
14cm (5.5 inches) |
32mm - 34mm |
10mm - 12mm |
16mm - 17mm |
|
15cm (6 inches) |
34mm - 36mm |
12mm |
17mm - 18mm |
|
16.5cm (6.5 inches) |
36mm - 38mm |
12mm |
18mm - 19mm |
|
17.5cm (7 inches) |
39mm - 42mm |
12mm |
19.5mm - 21mm |
|
19cm (7.5 inches) |
43mm - 46mm |
14mm |
21.5mm - 23mm |
|
20cm (8 inches) + |
47mm + |
15mm + |
23.5mm + |
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The 2026 Longines HydroConquest 39mm automatic in stainless steel and ceramic reflects precision and prestige for connoisseurs with refined taste. Black dial with Super-LumiNova, powered by calibre L888.5 automatic with 72h reserve and silicon balance spring. 300m water resistance with rotating bezel.
Reference: L3.779.4.90.6
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WATCHES
|
Wrist Size |
Watch Case Diameter |
Watch Case Thickness |
Strap Thickness |
|
13cm (5 inches) |
29mm - 32mm |
Below 10mm |
14.5mm - 16mm |
|
14cm (5.5 inches) |
32mm - 34mm |
10mm - 12mm |
16mm - 17mm |
|
15cm (6 inches) |
34mm - 36mm |
12mm |
17mm - 18mm |
|
16.5cm (6.5 inches) |
36mm - 38mm |
12mm |
18mm - 19mm |
|
17.5cm (7 inches) |
39mm - 42mm |
12mm |
19.5mm - 21mm |
|
19cm (7.5 inches) |
43mm - 46mm |
14mm |
21.5mm - 23mm |
|
20cm (8 inches) + |
47mm + |
15mm + |
23.5mm + |







