Seiko Cal. 3820 - 148

The Seiko 3820-148 represents an important milestone in Seiko's 1968 lineup. Powered by the 3820 caliber with 24j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-5d4dde4babc2]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1968

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