Seiko Cal. 5670 - 388

The Seiko 5670-388 represents an important milestone in Seiko's 1970 lineup. Powered by the 5670 caliber with 21j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-5d1e1b690e63]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1970

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