Seiko Cal. 6691 - 640

The Seiko 6691-640 represents an important milestone in Seiko's 1994 lineup. It features a Green dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-da8fae8230bc]

Specifications

Movement

Solar

Case Material

Titanium

Case Width

34mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1994

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