Seiko Cal. 3857 - 639

This Spring Drive model from 1998 features a 40mm Hardlex-Coated Steel case. Powered by the 3857 caliber with 19j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-e9b33d90becb]

Also known as: Panda, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Burgundy

Jewels

19j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1998

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