Seiko Cal. 6630 - 653

This Spring Drive model from 1972 features a 37mm PVD Black case. It features a Navy dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-6f988da6c8d8]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

27j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1972

Related Models

• Seiko 7099-188
• Seiko 4515-922
• Seiko 6282-524
• Seiko 7038-843
• Seiko 6140-814
• Seiko 6250-419
• Seiko 6262-812
• Seiko 4562-562
• Seiko 4489-122
• Seiko 6234-832
• Seiko 5289-161
• Seiko 0714-819