Seiko Cal. 0720 - 813

The 0720-813 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0720 caliber with 35j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-f4773edc5fbc]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1982

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