Seiko Cal. 5631 - 252

The 5631-252 is a sought-after Automatic piece from Seiko's golden era. It features a Silver dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-ee54fd7f2d45]

Also known as: Monster, Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1984

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