Seiko Cal. 6638 - 553

The 6638-553 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-2affa9c5c25f]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1983

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