Seiko Cal. 4561 - 310

This Spring Drive model from 1970 features a 35mm Two-Tone case. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-90a7e8360f92]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1970

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