Seiko Cal. 3855 - 131

This Hand-Winding model from 1971 features a 46mm Two-Tone case. With its 20mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-e72b4368301d]

Also known as: UFO, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1971

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