Seiko Cal. 6657 - 748

This Spring Drive model from 1980 features a 39mm Two-Tone case. It features a Burgundy dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-74dc4b81b67c]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1980

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