Seiko Cal. 4491 - 231

This Hand-Winding model from 1981 features a 44mm Hardlex-Coated Steel case. It features a White dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-6dc52fb55fdd]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

White

Jewels

33j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1981

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