Seiko Cal. 3863 - 640

Seiko 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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