Seiko Cal. 4531 - 442

Seiko 4531-442

This Automatic model from 1971 features a 40mm Titanium case. Powered by the 4531 caliber with 21j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-30bdef61d9ad]

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
40mm
Case Thickness
9.2mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Navy
Jewels
21j
Frequency
28,800 bph
Power Reserve
68 hours
Year
1971

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