Seiko Cal. 0770 - 317

The Seiko 0770-317 represents an important milestone in Seiko's 1979 lineup. It features a Black dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-f90e133e2b3b]

Also known as: Helmet, Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1979

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