Seiko Cal. 4539 - 380

Seiko 4539-380

The 4539-380 is a sought-after Solar piece from Seiko's golden era. Powered by the 4539 caliber with 34j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-79d0b82ce588]

Also known as: Sumo

Specifications

Movement
Solar
Case Material
Titanium
Case Width
43mm
Case Thickness
14.3mm
Lug Width
19mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
140m
Dial Color
Green
Jewels
34j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1981

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