Seiko Cal. 5687 - 541

Released in 1966, the Cal. 5687 with design code 541 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-28cfe1a51b9c]

Also known as: Sea Horse, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1966

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