Seiko Cal. 0780 - 520

The Seiko 0780-520 represents an important milestone in Seiko's 1973 lineup. Powered by the 0780 caliber with 22j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-a2c485c8a32e]

Also known as: Helmet, Navigator

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1973

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