Seiko Cal. 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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