Seiko Cal. 6641 - 481

The 6641-481 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6641 caliber with 36j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-fd5a7a0d488c]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1986

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