Seiko Cal. 5693 - 646

The 5693-646 is a sought-after Quartz piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-90b3a82f14f5]

Also known as: Helmet, UFO

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1971

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