Seiko Cal. 5651 - 564

This Spring Drive model from 1968 features a 45mm Two-Tone case. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-1dbd6980c7e7]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1968

Related Models

• Seiko 6671-721
• Seiko 5235-662
• Seiko 3824-734
• Seiko 4426-404
• Seiko 6283-871
• Seiko 6267-501
• Seiko 4526-136
• Seiko 3850-722
• Seiko 5250-457
• Seiko 6686-655
• Seiko 4459-822
• Seiko 7096-484