Seiko Cal. 4551 - 621

This Quartz model from 1979 features a 41mm Titanium case. Powered by the 4551 caliber with 28j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-af407704e8c3]

Also known as: Sumo, UFO

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1979

Related Models

• Seiko 3835-865
• Seiko 6355-834
• Seiko 6165-850
• Seiko 6197-342
• Seiko 4494-462
• Seiko 7040-565
• Seiko 4433-842
• Seiko 0790-538
• Seiko 7115-784
• Seiko 4572-835
• Seiko 0785-849
• Seiko 4597-976