Seiko Cal. 7154 - 643

Seiko 7154-643

The 7154-643 is a sought-after Spring Drive piece from Seiko's golden era. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-ea3a8da7c845]

Also known as: Sportsmatic, Arnie

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
41mm
Case Thickness
8.3mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
180m
Dial Color
Blue Sunburst
Jewels
34j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1978

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