Seiko Cal. 0721 - 540

Seiko 0721-540

The 0721-540 is a sought-after Automatic piece from Seiko's golden era. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-4ab5f405ac3f]

Also known as: Shogun, Tuna

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
44mm
Case Thickness
12.0mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
180m
Dial Color
Silver
Jewels
33j
Frequency
21,600 bph
Power Reserve
70 hours
Year
1965

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