Seiko Cal. 6635 - 313

The 6635-313 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-05a35904fbc4]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1977

Related Models

• Seiko 6390-829
• Seiko 3881-678
• Seiko 6348-483
• Seiko 4530-334
• Seiko 3863-807
• Seiko 6630-799
• Seiko 7195-739
• Seiko 7139-893
• Seiko 7089-786
• Seiko 6345-815
• Seiko 0731-384
• Seiko 0710-425