Seiko Cal. 5678 - 366

Released in 1972, the Cal. 5678 with design code 366 was part of Seiko's domestic market collection. Powered by the 5678 caliber with 25j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-afd1bb1f0ff6]

Also known as: Monster, UFO

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1972

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