Seiko Cal. 4491 - 771

The Seiko 4491-771 represents an important milestone in Seiko's 1967 lineup. It features a Black dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-34ba192e5f8a]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1967

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