Seiko Cal. 0721 - 357

Seiko 0721-357

The 0721-357 is a sought-after Hand-Winding piece from Seiko's golden era. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-a4bb4e08eb54]

Also known as: Silverwave, World Timer

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
37mm
Case Thickness
10.0mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Black
Jewels
27j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1971

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