Seiko Cal. 4491 - 185

This Hand-Winding model from 1967 features a 46mm Two-Tone case. It features a Black dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-4b525412711a]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Black

Jewels

27j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1967

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