Seiko Cal. 6681 - 187

The Seiko 6681-187 represents an important milestone in Seiko's 1976 lineup. Powered by the 6681 caliber with 21j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-c0595dc17ac2]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1976

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