Seiko Cal. 6131 - 785

Seiko 6131-785

The Seiko 6131-785 represents an important milestone in Seiko's 1977 lineup. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-68c31233f656]

Also known as: Helmet, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
38mm
Case Thickness
11.4mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
36j
Frequency
28,800 bph
Power Reserve
52 hours
Year
1977

Related Models

seikata-wm-68c31233f656