Seiko Cal. 7187 - 107

Seiko 7187-107

The Seiko 7187-107 represents an important milestone in Seiko's 1971 lineup. Powered by the 7187 caliber with 30j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-996ef456b96e]

Also known as: Sumo

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
37mm
Case Thickness
13.5mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Champagne
Jewels
30j
Frequency
28,800 bph
Power Reserve
43 hours
Year
1971

Related Models

seikata-wm-996ef456b96e