Seiko Cal. 6637 - 541

The Seiko 6637-541 represents an important milestone in Seiko's 1980 lineup. With its 22mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-3f82d789431b]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1980

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