Seiko Cal. 0770 - 520

This Spring Drive model from 1987 features a 34mm Hardlex-Coated Steel case. It features a Silver dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-a5a2514669b6]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1987

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