Seiko Cal. 4539 - 723

Seiko 4539-723

The Seiko 4539-723 represents an important milestone in Seiko's 1981 lineup. Powered by the 4539 caliber with 23j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-14eb805554a0]

Also known as: Baby Tuna

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
41mm
Case Thickness
9.2mm
Lug Width
18mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
190m
Dial Color
White
Jewels
23j
Frequency
21,600 bph
Power Reserve
39 hours
Year
1981

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