Seiko Cal. 4538 - 100

The Seiko 4538-100 represents an important milestone in Seiko's 1986 lineup. Powered by the 4538 caliber with 20j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-f93b0491043e]

Also known as: Sumo, Arnie

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1986

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