Seiko Cal. 0770 - 638

The Seiko 0770-638 represents an important milestone in Seiko's 1977 lineup. It features a Navy dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-5c55f53856c7]

Also known as: Samurai, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1977

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