Seiko Cal. 4436 - 191

The Seiko 4436-191 represents an important milestone in Seiko's 1987 lineup. Powered by the 4436 caliber with 18j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-53d44367ad2d]

Also known as: Pogue, Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1987

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