Seiko Cal. 0740 - 680

The Seiko 0740-680 represents an important milestone in Seiko's 1968 lineup. Powered by the 0740 caliber with 30j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-a79dff90002a]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1968

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