Seiko Cal. 5254 - 637

The Seiko 5254-637 represents an important milestone in Seiko's 1972 lineup. Powered by the 5254 caliber with 32j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-a3ae4aa639e7]

Also known as: Sumo, Arnie

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

32j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1972

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