Seiko Cal. 4431 - 498

The 4431-498 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4431 caliber with 33j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-c5478be97eb5]

Also known as: Monster, Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1966

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