Seiko Cal. 5257 - 742

Seiko 5257-742

The Seiko 5257-742 represents an important milestone in Seiko's 1978 lineup. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-80c834d65c1b]

Also known as: Sportsmatic, Arnie

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
12.9mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
140m
Dial Color
Burgundy
Jewels
35j
Frequency
36,000 bph
Power Reserve
48 hours
Year
1978

Related Models

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