Seiko Cal. 3827 - 644

The 3827-644 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3827 caliber with 27j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-bf4b2aaa4e2c]

Also known as: Rally, Goldfeather

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

27j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1977

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