Seiko Cal. 5641 - 257

This Hand-Winding model from 1990 features a 45mm PVD Black case. It features a White dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-616e80be8dd6]

Also known as: UFO, World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1990

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