Seiko Cal. 6641 - 974

Seiko 6641-974

The 6641-974 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6641 caliber with 24j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-5304ee701266]

Also known as: Bullhead, Navigator

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
41mm
Case Thickness
8.2mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
160m
Dial Color
White
Jewels
24j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1999

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seikata-wm-5304ee701266