Seiko Cal. 3820 - 156

Released in 1987, the Cal. 3820 with design code 156 was part of Seiko's domestic market collection. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-50cdc0fc0f24]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1987

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