Seiko Cal. 6637 - 849

The 6637-849 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6637 caliber with 27j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-67e030b52ada]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1990

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