Seiko Cal. 5640 - 696

The Seiko 5640-696 represents an important milestone in Seiko's 1975 lineup. It features a Green dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-f461eec590c1]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1975

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