Seiko Cal. 6643 - 575

This Spring Drive model from 1975 features a 38mm PVD Black case. It features a Cream dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-8cc22d37bf60]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Cream

Jewels

36j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1975

Related Models

• Seiko 6247-785
• Seiko 4570-545
• Seiko 5630-188
• Seiko 6257-230
• Seiko 6669-449
• Seiko 5657-840
• Seiko 6342-775
• Seiko 4542-681
• Seiko 6664-737
• Seiko 4437-804
• Seiko 6243-155
• Seiko 6337-614