Seiko Cal. 3890 - 187

The Seiko 3890-187 represents an important milestone in Seiko's 1973 lineup. Powered by the 3890 caliber with 26j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-4df1c5c56f4b]

Also known as: Turtle, Monster

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1973

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