Seiko Cal. 3839 - 637

The Seiko 3839-637 represents an important milestone in Seiko's 1978 lineup. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-a517056b05c6]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1978

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