Seiko Cal. 6691 - 963

This Spring Drive model from 1998 features a 37mm Titanium case. Powered by the 6691 caliber with 36j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-f2f1ca305e63]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1998

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