Seiko Cal. 3840 - 405

This Hand-Winding model from 1971 features a 35mm PVD Black case. With its 20mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-9285caeba2f6]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1971

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