Seiko Cal. 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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