Seiko Cal. 7097 - 640

The Seiko 7097-640 represents an important milestone in Seiko's 1991 lineup. Powered by the 7097 caliber with 27j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-81c9a00dc4ed]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

35mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Cream

Jewels

27j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1991

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