Seiko Cal. 4431 - 535

The 4431-535 is a sought-after Automatic piece from Seiko's golden era. With its 18mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-ae827ee5444c]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1984

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