Seiko Cal. 0770 - 879

This Spring Drive model from 1972 features a 40mm Hardlex-Coated Steel case. It features a Green dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-5d5ac34e91ef]

Also known as: Sportsmatic, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1972

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