Seiko Cal. 3873 - 723

Seiko 3873-723

The 3873-723 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3873 caliber with 34j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-2d83ffa701ab]

Also known as: Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
36mm
Case Thickness
15.2mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
150m
Dial Color
Navy
Jewels
34j
Frequency
28,800 bph
Power Reserve
54 hours
Year
1977

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