Seiko Cal. 6687 - 647

The Seiko 6687-647 represents an important milestone in Seiko's 1995 lineup. Powered by the 6687 caliber with 17j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-56c271b24a55]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1995

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