Seiko Cal. 3813 - 764

Seiko 3813-764

The 3813-764 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3813 caliber with 29j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-a0a76983cde7]

Also known as: Baby Tuna

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
34mm
Case Thickness
13.0mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Navy
Jewels
29j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1981

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