Seiko Cal. 7121 - 578

Seiko 7121-578

The 7121-578 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7121 caliber with 20j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-99e5a1def731]

Also known as: Tuna

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
38mm
Case Thickness
10.5mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Cream
Jewels
20j
Frequency
28,800 bph
Power Reserve
43 hours
Year
1966

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