Seiko Cal. 4557 - 131

This Spring Drive model from 1978 features a 41mm Two-Tone case. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-423de7ceea54]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1978

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