Seiko Cal. 5637 - 495

The Seiko 5637-495 represents an important milestone in Seiko's 1967 lineup. Powered by the 5637 caliber with 31j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-ec86226c54e5]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1967

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