Seiko Cal. 6637 - 429

The 6637-429 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6637 caliber with 27j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-e781a848581e]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

27j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1972

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