Seiko Cal. 5687 - 715

Released in 1965, the Cal. 5687 with design code 715 was part of Seiko's domestic market collection. It features a Black dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-fba3232de7f1]

Also known as: UFO, Sea Horse

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1965

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