Seiko Cal. 6635 - 856

The Seiko 6635-856 represents an important milestone in Seiko's 1975 lineup. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-104d4736739f]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1975

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