Seiko Cal. 5637 - 543

The 5637-543 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5637 caliber with 22j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-d35cc327ed70]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1994

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