Seiko Cal. 5691 - 320

The Seiko 5691-320 represents an important milestone in Seiko's 1988 lineup. Powered by the 5691 caliber with 22j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-449d04d03e39]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1988

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