Seiko Cal. 3888 - 639

The Seiko 3888-639 represents an important milestone in Seiko's 1968 lineup. Powered by the 3888 caliber with 18j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-b19432f96cbe]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

18j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1968

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