Seiko Cal. 3877 - 639

The Seiko 3877-639 represents an important milestone in Seiko's 1967 lineup. Powered by the 3877 caliber with 36j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-638b189949a8]

Also known as: Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

43mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1967

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