Seiko Cal. 3854 - 639

The Seiko 3854-639 represents an important milestone in Seiko's 1976 lineup. Powered by the 3854 caliber with 17j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-42762cc897a6]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

44mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1976

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