Seiko Cal. 4551 - 720

This Solar model from 1965 features a 40mm PVD Black case. With its 19mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-ba72397631d0]

Also known as: Monster

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1965

Related Models

• Seiko 4410-783
• Seiko 6384-874
• Seiko 6676-777
• Seiko 6626-735
• Seiko 6637-143
• Seiko 4518-672
• Seiko 7158-465
• Seiko 5649-548
• Seiko 6379-238
• Seiko 5286-516
• Seiko 7115-782
• Seiko 7177-887