Seiko Cal. 7138 - 253

The Seiko 7138-253 represents an important milestone in Seiko's 1988 lineup. Powered by the 7138 caliber with 24j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-90708fb4102f]

Also known as: Sumo, Flighty

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1988

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