Seiko Cal. 3878 - 340

Seiko 3878-340

The 3878-340 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3878 caliber with 32j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-436d7787f0ee]

Also known as: Emperor, Arnie

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
45mm
Case Thickness
12.6mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
White
Jewels
32j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1968

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