Seiko Cal. 4531 - 645

The Seiko 4531-645 represents an important milestone in Seiko's 1970 lineup. With its 22mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-d8ee17bca979]

Also known as: Goldfeather, Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1970

Related Models

• Seiko 7035-472
• Seiko 4573-150
• Seiko 6310-616
• Seiko 7055-792
• Seiko 6698-196
• Seiko 6156-712
• Seiko 7012-845
• Seiko 4556-127
• Seiko 6663-849
• Seiko 4470-309
• Seiko 6169-911
• Seiko 6232-945