Seiko Cal. 5643 - 460

This Spring Drive model from 1974 features a 36mm Hardlex-Coated Steel case. It features a White dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-23e38d8eca55]

Also known as: Bullhead, UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1974

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