Seiko Cal. 5621 - 813

The 5621-813 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5621 caliber with 21j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-a7bec666d3b6]

Also known as: Navigator, Sea Horse

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1982

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