Seiko Cal. 4578 - 979

This Solar model from 1973 features a 44mm Stainless Steel case. Powered by the 4578 caliber with 20j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-396f231078e1]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Burgundy

Jewels

20j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1973

Related Models

• Seiko 7020-213
• Seiko 7066-337
• Seiko 6323-878
• Seiko 6646-320
• Seiko 6115-777
• Seiko 6134-345
• Seiko 6231-968
• Seiko 6386-207
• Seiko 7167-760
• Seiko 5285-489
• Seiko 0742-594
• Seiko 6118-785