Seiko Cal. 4428 - 913

This Hand-Winding model from 1986 features a 35mm Hardlex-Coated Steel case. It features a White dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-8c76d374074a]

Also known as: Monster, Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1986

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