Seiko Cal. 6636 - 764

The Seiko 6636-764 represents an important milestone in Seiko's 1975 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-6b679bdf1de0]

Also known as: Goldfeather, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1975

Related Models

• Seiko 5251-628
• Seiko 5627-406
• Seiko 6322-654
• Seiko 7014-346
• Seiko 6251-721
• Seiko 5289-108
• Seiko 6327-867
• Seiko 3830-359
• Seiko 5273-263
• Seiko 0764-586
• Seiko 7197-834
• Seiko 6630-624