Seiko Cal. 4531 - 163

Seiko 4531-163

This Quartz model from 1974 features a 44mm Titanium case. Powered by the 4531 caliber with 36j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-e74760f7bbb0]

Also known as: Helmet, Arnie

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
44mm
Case Thickness
11.1mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Green
Jewels
36j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1974

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