Seiko Cal. 3820 - 957

The 3820-957 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-417a343d4d0c]

Also known as: Monster, Rally

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1974

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