Seiko Cal. 6357 - 637

The Seiko 6357-637 represents an important milestone in Seiko's 1978 lineup. With its 22mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-eca71235edc3]

Also known as: Monster, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1978

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