Seiko Cal. 4546 - 143

Seiko 4546-143

The 4546-143 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-e80680e4a322]

Also known as: Crown, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
14.8mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Green
Jewels
28j
Frequency
21,600 bph
Power Reserve
50 hours
Year
1978

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