Seiko Cal. 7128 - 399

Seiko 7128-399

The 7128-399 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 7128 caliber with 18j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-ca21e8d1df39]

Also known as: Sumo, Sportsmatic

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
34mm
Case Thickness
15.6mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Black
Jewels
18j
Frequency
21,600 bph
Power Reserve
59 hours
Year
1973

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