Seiko Cal. 3863 - 640

The 3863-640 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3863 caliber with 22j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-c08e7dba87f2]

Also known as: Samurai, Rally

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1994

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