Seiko Cal. 3817 - 641

The 3817-641 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3817 caliber with 23j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-b3c9fa25ce2c]

Also known as: Goldfeather, Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1984

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