Seiko Cal. 3820 - 278

The Seiko 3820-278 represents an important milestone in Seiko's 1970 lineup. Powered by the 3820 caliber with 31j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-3b8e148721c7]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1970

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