Seiko Cal. 6691 - 408

The Seiko 6691-408 represents an important milestone in Seiko's 1969 lineup. Powered by the 6691 caliber with 28j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-3b83c6b03656]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1969

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