Seiko Cal. 7187 - 554

Seiko 7187-554

This Hand-Winding model from 1981 features a 37mm Titanium case. Powered by the 7187 caliber with 28j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-f4d588bc1d92]

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
37mm
Case Thickness
14.6mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
90m
Dial Color
Burgundy
Jewels
28j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1981

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