Seiko Cal. 7181 - 310

This Hand-Winding model from 1970 features a 37mm PVD Black case. With its 18mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-8a1832bb7a92]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1970

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