Seiko Cal. 5257 - 745

The Seiko 5257-745 represents an important milestone in Seiko's 1997 lineup. Powered by the 5257 caliber with 20j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-e3a651f4a587]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1997

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