Seiko Cal. 6686 - 640

The Seiko 6686-640 represents an important milestone in Seiko's 1989 lineup. Powered by the 6686 caliber with 27j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-77c4236f4927]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1989

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