Seiko Cal. 3879 - 621

The 3879-621 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3879 caliber with 35j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-5fee686dd0fa]

Also known as: UFO, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

35j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1965

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