Seiko Cal. 3812 - 423

The 3812-423 is a sought-after Spring Drive piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-8d0b73f2087a]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1968

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