Seiko Cal. 6321 - 221

Seiko 6321-221

The 6321-221 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6321 caliber with 21j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-023edc5e5941]

Also known as: Monster, Bullhead

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
46mm
Case Thickness
10.3mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
140m
Dial Color
Black
Jewels
21j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1994

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seikata-wm-023edc5e5941