Seiko Cal. 7137 - 554

The Seiko 7137-554 represents an important milestone in Seiko's 1991 lineup. Powered by the 7137 caliber with 30j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-3be653c4edaa]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1991

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