Seiko Cal. 6657 - 438

Seiko 6657-438

This Quartz model from 1975 features a 41mm PVD Black case. With its 18mm lug width and 14.0mm profile, it sits comfortably on most wrists. [seikata-wm-a2a02407676e]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
41mm
Case Thickness
14.0mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Silver
Jewels
34j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1975

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seikata-wm-a2a02407676e