Seiko Cal. 3812 - 103

Seiko 3812-103

The 3812-103 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3812 caliber with 20j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-07cf14b2e256]

Also known as: UFO, Bellmatic

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
34mm
Case Thickness
14.4mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Black
Jewels
20j
Frequency
28,800 bph
Power Reserve
57 hours
Year
1993

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