Seiko Cal. 5639 - 373

Seiko 5639-373

The 5639-373 is a sought-after Solar piece from Seiko's golden era. Powered by the 5639 caliber with 29j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-be5b4fc98ff8]

Also known as: Bullhead

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
39mm
Case Thickness
12.3mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
200m
Dial Color
Silver
Jewels
29j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1984

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