Seiko Cal. 7161 - 661

Seiko 7161-661

The 7161-661 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7161 caliber with 27j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-46bf569fd541]

Also known as: Bullhead, Arnie

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
10.9mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
170m
Dial Color
White
Jewels
27j
Frequency
28,800 bph
Power Reserve
55 hours
Year
1973

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seikata-wm-46bf569fd541