Seiko Cal. 3879 - 621

Seiko 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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