Seiko Cal. 6657 - 855

Seiko 6657-855

This Spring Drive model from 1979 features a 37mm PVD Black case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-a4ccd4405f27]

Also known as: Sea Horse

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
37mm
Case Thickness
8.3mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Blue Sunburst
Jewels
23j
Frequency
28,800 bph
Power Reserve
62 hours
Year
1979

Related Models

seikata-wm-a4ccd4405f27