Seiko Cal. 4491 - 391

This Spring Drive model from 1968 features a 45mm Hardlex-Coated Steel case. It features a White dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-a80a0f9c2fb1]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

35j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1968

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