Seiko Cal. 4436 - 437

This Spring Drive model from 1998 features a 40mm PVD Black case. Powered by the 4436 caliber with 28j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-2e97c840cb88]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1998

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