Seiko Cal. 5687 - 726

Released in 1978, the Cal. 5687 with design code 726 was part of Seiko's domestic market collection. Powered by the 5687 caliber with 19j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-bfbb826077ca]

Also known as: Monster, UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Cream

Jewels

19j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1978

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