Seiko Cal. 6681 - 981

The Seiko 6681-981 represents an important milestone in Seiko's 1975 lineup. Powered by the 6681 caliber with 24j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-19580a40b258]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1975

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