Seiko Cal. 4437 - 190

This Hand-Winding model from 1991 features a 36mm Two-Tone case. It features a Navy dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-d525015540d1]

Also known as: World Timer, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1991

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