Seiko Cal. 6687 - 683

The Seiko 6687-683 represents an important milestone in Seiko's 1970 lineup. Powered by the 6687 caliber with 28j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-0a26c466c27d]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

28j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1970

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