Seiko Cal. 5691 - 300

This Hand-Winding model from 1990 features a 40mm Stainless Steel case. It features a Silver dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-571a5fcc5221]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1990

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