Seiko Cal. 3857 - 646

The Seiko 3857-646 represents an important milestone in Seiko's 1979 lineup. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-a6e693fc8666]

Also known as: Emperor, Arnie

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1979

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