Seiko Cal. 6623 - 641

The 6623-641 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6623 caliber with 36j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-b95082375f95]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1975

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