Seiko Cal. 4436 - 273

This Spring Drive model from 1986 features a 43mm Stainless Steel case. Powered by the 4436 caliber with 24j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-a2c25feab5c9]

Also known as: Sumo, Silverwave

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1986

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