Seiko Cal. 6635 - 634

The 6635-634 is a sought-after Hand-Winding piece from Seiko's golden era. With its 22mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-44c3811b3901]

Also known as: UFO, Rally

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1986

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