Seiko Cal. 3813 - 923

Seiko 3813-923

The 3813-923 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3813 caliber with 17j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-57d4328c0453]

Also known as: Monster, Shogun

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
12.6mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Cream
Jewels
17j
Frequency
21,600 bph
Power Reserve
69 hours
Year
1977

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seikata-wm-57d4328c0453