Seiko Cal. 7187 - 698

Seiko 7187-698

This Spring Drive model from 1975 features a 40mm Titanium case. Powered by the 7187 caliber with 26j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-71dc42bc17f9]

Also known as: Sumo, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
40mm
Case Thickness
12.5mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
60m
Dial Color
Green
Jewels
26j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1975

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