Seiko Cal. 3813 - 702

Seiko 3813-702

The 3813-702 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3813 caliber with 28j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-e86d7c565abf]

Also known as: UFO, Emperor

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
11.3mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
130m
Dial Color
White
Jewels
28j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1971

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