Seiko Cal. 5638 - 891

The 5638-891 is a sought-after Automatic piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-407301320f0b]

Also known as: Crown, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

26j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1990

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