Seiko Cal. 4438 - 509

This Hand-Winding model from 1992 features a 36mm Titanium case. Powered by the 4438 caliber with 30j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-bcdbcf170b41]

Also known as: Bullhead, Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1992

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