Seiko Cal. 5638 - 410

This Solar model from 1985 features a 37mm Gold-Plated case. Powered by the 5638 caliber with 31j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-7d7f41e8f1c6]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1985

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