Seiko Cal. 6681 - 564

The Seiko 6681-564 represents an important milestone in Seiko's 1977 lineup. Powered by the 6681 caliber with 23j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-0dcab2d307b4]

Also known as: Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1977

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