Seiko Cal. 0731 - 542

Seiko 0731-542

This Spring Drive model from 1981 features a 34mm Titanium case. With its 22mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-f24a893b8a59]

Also known as: Monster

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
34mm
Case Thickness
13.5mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Navy
Jewels
23j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1981

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