Seiko Cal. 0721 - 725

Seiko 0721-725

The 0721-725 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-25cf1b8806bb]

Also known as: Arnie

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
12.4mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Champagne
Jewels
28j
Frequency
21,600 bph
Power Reserve
66 hours
Year
1990

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