Seiko Cal. 6645 - 787

The 6645-787 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6645 caliber with 17j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-c1b9689e6f09]

Also known as: Shogun, Bullhead

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1991

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