Seiko Cal. 0778 - 754

This Hand-Winding model from 1971 features a 40mm Titanium case. It features a Green dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-98a7120f8ea1]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1971

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