Seiko Cal. 6321 - 375

Seiko 6321-375

The 6321-375 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6321 caliber with 22j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-ab39aaf94a02]

Also known as: Helmet, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
37mm
Case Thickness
10.5mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
130m
Dial Color
Navy
Jewels
22j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1984

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