Seiko Cal. 5638 - 611

The 5638-611 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5638 caliber with 17j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-21ec78699824]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1980

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