Seiko Cal. 4550 - 372

Seiko 4550-372

The 4550-372 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4550 caliber with 34j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-db85c3242ac2]

Also known as: Sumo, Baby Tuna

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
38mm
Case Thickness
15.6mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
80m
Dial Color
Black
Jewels
34j
Frequency
36,000 bph
Power Reserve
62 hours
Year
1965

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