Seiko Cal. 0770 - 256

This Hand-Winding model from 1977 features a 37mm Two-Tone case. With its 22mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-6682baa80fa1]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Green

Jewels

19j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1977

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