Seiko Cal. 6691 - 931

The Seiko 6691-931 represents an important milestone in Seiko's 1989 lineup. Powered by the 6691 caliber with 35j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-e8e3750d8ee8]

Also known as: Bellmatic, Arnie

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

35j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1989

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