Seiko Cal. 7181 - 155

Seiko 7181-155

The 7181-155 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7181 caliber with 36j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-d1fc5afef7dc]

Also known as: Monster, Flighty

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
39mm
Case Thickness
10.3mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Green
Jewels
36j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1969

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