Seiko Cal. 0771 - 831

This Spring Drive model from 1978 features a 44mm Hardlex-Coated Steel case. It features a Green dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-5e86ebe67de3]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1978

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