Seiko Cal. 3857 - 985

The Seiko 3857-985 represents an important milestone in Seiko's 1991 lineup. Powered by the 3857 caliber with 22j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-09d18b6a418c]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1991

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