Seiko Cal. 5633 - 731

The Seiko 5633-731 represents an important milestone in Seiko's 1965 lineup. It features a Cream dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-4b46a5b599c1]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1965

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