Seiko Cal. 5678 - 641

Released in 1996, the Cal. 5678 with design code 641 was part of Seiko's domestic market collection. Powered by the 5678 caliber with 20j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-3e87d3da6dac]

Also known as: UFO, Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1996

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