Seiko Cal. 7139 - 557

The Seiko 7139-557 represents an important milestone in Seiko's 1991 lineup. Powered by the 7139 caliber with 23j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-30872945cbe9]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1991

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