Seiko Cal. 7121 - 553

Seiko 7121-553

The 7121-553 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7121 caliber with 35j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-499931b7cad4]

Also known as: Monster, Sumo

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
35mm
Case Thickness
9.3mm
Lug Width
18mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
110m
Dial Color
Champagne
Jewels
35j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1981

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seikata-wm-499931b7cad4