Seiko Cal. 3857 - 988

The 3857-988 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-3235e18109be]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1973

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