Seiko Cal. 7138 - 725

The Seiko 7138-725 represents an important milestone in Seiko's 1980 lineup. Powered by the 7138 caliber with 20j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-5b3255d5df24]

Also known as: Helmet, Rally

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1980

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