Seiko Cal. 4427 - 728

This Quartz model from 1991 features a 44mm Stainless Steel case. Powered by the 4427 caliber with 25j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-66de190adb34]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1991

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