Ref. SKA777
Case size: 40.5mmMovement: 5M82
The Seiko reference SKA777 has a steel case measuring 40.5 mm across. The case has a thickness of 11.2 mm, with a water-resistance rating of 100 metres. The movement is quartz calibre 5M82, which contains 6 jewels. The dial is covered by a Hardlex crystal. The folding clasp has a three-fold construction and a push-button release mechanism. The see-through case back has a screw construction. The distance between the lugs measures 20 mm. The hands and indices are luminous.
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Last updated 9 Oct 2026Suggest a correction
TECHNICAL SPECIFICATIONS
GENERAL
Gender
Men
CASE
Diameter
40.5mm
Thickness
11.2mm
Lug Width
20mm
Case Material
Steel
Water Resistance
100m
Crystal
Mineral Glass
MOVEMENT
Movement Type
Quartz
Caliber
5M82
Jewels
6 jewels
BRACELET/STRAP
Clasp Type
Fold Clasp
FEATURES & COMPLICATIONS
Display backLuminous handsLuminous indices
