Seiko Cal. 5690 - 645

The 5690-645 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5690 caliber with 27j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-a6daa1abe49a]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Burgundy

Jewels

27j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1976

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