Seiko Cal. 6331 - 732

Seiko 6331-732

The 6331-732 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6331 caliber with 20j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-13197e7c32ab]

Also known as: Baby Tuna, Emperor

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
14.5mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Blue Sunburst
Jewels
20j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1969

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seikata-wm-13197e7c32ab