Seiko Cal. 4540 - 861

Seiko 4540-861

This Automatic model from 1982 features a 37mm Two-Tone case. Powered by the 4540 caliber with 28j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-6b0c30a4e66d]

Also known as: World Timer, Sea Horse

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
37mm
Case Thickness
15.9mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
70m
Dial Color
White
Jewels
28j
Frequency
21,600 bph
Power Reserve
43 hours
Year
1982

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