Seiko Cal. 3890 - 646

The Seiko 3890-646 represents an important milestone in Seiko's 1985 lineup. Powered by the 3890 caliber with 25j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-8fa02bf8cc2f]

Also known as: Goldfeather, Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

25j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1985

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