Seiko Cal. 6633 - 857

The 6633-857 is a sought-after Hand-Winding piece from Seiko's golden era. With its 20mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-6e76ad73cb37]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1978

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