Seiko Cal. 7121 - 428

Seiko 7121-428

The 7121-428 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 7121 caliber with 30j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-b4f8ee149b0d]

Also known as: Monster, Crown

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
11.9mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Navy
Jewels
30j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1997

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seikata-wm-b4f8ee149b0d