Seiko Cal. 4540 - 873

Seiko 4540-873

The Seiko 4540-873 represents an important milestone in Seiko's 1972 lineup. Powered by the 4540 caliber with 22j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-5046677873b3]

Also known as: Monster, Sportsmatic

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
34mm
Case Thickness
15.9mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
140m
Dial Color
Black
Jewels
22j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1972

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seikata-wm-5046677873b3