Seiko Cal. 4436 - 881

This Spring Drive model from 1987 features a 40mm Titanium case. Powered by the 4436 caliber with 32j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-aa85c40da8ad]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1987

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