Seiko Cal. 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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