Seiko Cal. 6634 - 525

Released in 1981, the Cal. 6634 with design code 525 was part of Seiko's domestic market collection. With its 18mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-ba4001fe5526]

Also known as: Monster, UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1981

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