Seiko Cal. 3820 - 680

Released in 1970, the Cal. 3820 with design code 680 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-e2ca2ed6c534]

Also known as: UFO, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

14.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1970

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