Seiko Cal. 6645 - 859

The Seiko 6645-859 represents an important milestone in Seiko's 1973 lineup. Powered by the 6645 caliber with 31j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-8a37b5ad05e9]

Also known as: Bullhead, Emperor

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1973

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