Seiko Cal. 4436 - 487

The Seiko 4436-487 represents an important milestone in Seiko's 1984 lineup. Powered by the 4436 caliber with 25j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-22545fd7ad67]

Also known as: Pogue, Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1984

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