Seiko Cal. 7181 - 515

Seiko 7181-515

The 7181-515 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7181 caliber with 31j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-2f511e37dc6e]

Also known as: Bullhead

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
11.5mm
Lug Width
20mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
Navy
Jewels
31j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1977

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