Seiko Cal. 0742 - 257

The Seiko 0742-257 represents an important milestone in Seiko's 1983 lineup. Powered by the 0742 caliber with 24j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-68757254e665]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1983

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