Seiko Cal. 4421 - 756

This Automatic model from 1982 features a 34mm Stainless Steel case. Powered by the 4421 caliber with 23j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-86894f437843]

Also known as: Sumo, World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1982

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