Seiko Cal. 7181 - 381

Seiko 7181-381

The 7181-381 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7181 caliber with 26j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-3ea1eeecd4c2]

Also known as: Samurai

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
9.8mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Green
Jewels
26j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1999

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