Seiko Cal. 5658 - 237

This Hand-Winding model from 1971 features a 45mm Stainless Steel case. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-31e4ff3697cb]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1971

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