Seiko Cal. 7187 - 261

Seiko 7187-261

This Hand-Winding model from 1975 features a 42mm Two-Tone case. Powered by the 7187 caliber with 21j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-d682d2b924df]

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
42mm
Case Thickness
15.1mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
Silver
Jewels
21j
Frequency
21,600 bph
Power Reserve
38 hours
Year
1975

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