Seiko Cal. 3821 - 690

Seiko 3821-690

The 3821-690 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3821 caliber with 33j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-74d8b005ea6f]

Also known as: Baby Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
41mm
Case Thickness
10.0mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
90m
Dial Color
Blue Sunburst
Jewels
33j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1994

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