Seiko Cal. 3878 - 658

The 3878-658 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 3878 caliber with 22j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-8578e453da7a]

Also known as: Sumo, Rally

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

42mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1969

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