Seiko Cal. 7189 - 406

Seiko 7189-406

This Spring Drive model from 1976 features a 39mm Titanium case. Powered by the 7189 caliber with 29j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-6dec6a2a4145]

Also known as: Monster, Sumo

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
39mm
Case Thickness
12.5mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Green
Jewels
29j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1976

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seikata-wm-6dec6a2a4145