Seiko Cal. 4437 - 556

This Hand-Winding model from 1989 features a 42mm Titanium case. Powered by the 4437 caliber with 23j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-d730f2575bbf]

Also known as: Samurai, Pogue

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1989

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