Seiko Cal. 0721 - 536

Seiko 0721-536

The 0721-536 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0721 caliber with 23j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-9c03fc976ead]

Also known as: Navigator

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
42mm
Case Thickness
9.7mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
80m
Dial Color
Burgundy
Jewels
23j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1974

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