Seiko Cal. 3856 - 275

This Spring Drive model from 1983 features a 41mm Two-Tone case. With its 21mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-264df4bdbeb0]

Also known as: Sumo, World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1983

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