Seiko Cal. 5678 - 820

The 5678-820 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5678 caliber with 30j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-54a7a2f7713a]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1984

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