Seiko Cal. 3820 - 446

Released in 1989, the Cal. 3820 with design code 446 was part of Seiko's domestic market collection. It features a Silver dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-3fbbc2e73ed2]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1989

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