Seiko Cal. 0712 - 645

The Seiko 0712-645 represents an important milestone in Seiko's 1979 lineup. Powered by the 0712 caliber with 22j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-94c72b99037e]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1979

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