Seiko Cal. 5645 - 877

This Spring Drive model from 1976 features a 35mm Two-Tone case. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-d76da00977af]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1976

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