Seiko Cal. 3878 - 920

Seiko 3878-920

The 3878-920 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 3878 caliber with 29j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-c99c17ebbd60]

Also known as: UFO

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
42mm
Case Thickness
11.5mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Blue Sunburst
Jewels
29j
Frequency
36,000 bph
Power Reserve
67 hours
Year
1983

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