Seiko Cal. 3870 - 138

The Seiko 3870-138 represents an important milestone in Seiko's 1997 lineup. Powered by the 3870 caliber with 20j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-dc2f932e0818]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1997

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