Seiko Cal. 3899 - 663

The 3899-663 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3899 caliber with 35j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-31b10c94fc32]

Also known as: Monster, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1978

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