Seiko Cal. 5640 - 872

The Seiko 5640-872 represents an important milestone in Seiko's 1975 lineup. It features a Cream dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-3df1e9b3d45c]

Also known as: UFO, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Cream

Jewels

35j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1975

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