Seiko Cal. 0728 - 631

Seiko 0728-631

This Automatic model from 1968 features a 35mm Hardlex-Coated Steel case. Powered by the 0728 caliber with 22j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-ca5a5faa4278]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
8.1mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
White
Jewels
22j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1968

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seikata-wm-ca5a5faa4278