Seiko Cal. 3820 - 309

Released in 1970, the Cal. 3820 with design code 309 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-1a4213fd6fc8]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1970

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