Seiko Cal. 5670 - 138

The Seiko 5670-138 represents an important milestone in Seiko's 1981 lineup. Powered by the 5670 caliber with 24j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-c20991c61b69]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1981

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