Seiko Cal. 3821 - 666

Seiko 3821-666

The 3821-666 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3821 caliber with 20j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-56487389410f]

Also known as: Sportsmatic

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
10.4mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
180m
Dial Color
Burgundy
Jewels
20j
Frequency
28,800 bph
Power Reserve
57 hours
Year
1993

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seikata-wm-56487389410f