Seiko Cal. 4548 - 257

The Seiko 4548-257 represents an important milestone in Seiko's 1972 lineup. Powered by the 4548 caliber with 33j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-38a3e8f0292b]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1972

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