Seiko Cal. 5643 - 121

The Seiko 5643-121 represents an important milestone in Seiko's 1988 lineup. It features a Green dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-89c83c3e7a7b]

Also known as: Monster, Navigator

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1988

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