Seiko Cal. 5646 - 645

This Spring Drive model from 1992 features a 43mm Two-Tone case. It features a Black dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-1fcccd4c9e3c]

Also known as: Monster, World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1992

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