Seiko Cal. 6649 - 687

The Seiko 6649-687 represents an important milestone in Seiko's 1982 lineup. Powered by the 6649 caliber with 32j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-91931dc106c5]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1982

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