Seiko Cal. 4428 - 588

The 4428-588 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4428 caliber with 26j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-39bac770c20b]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

26j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1972

Related Models

• Seiko 7116-173
• Seiko 6267-795
• Seiko 6325-663
• Seiko 5679-636
• Seiko 5213-962
• Seiko 7141-700
• Seiko 4517-800
• Seiko 3839-262
• Seiko 0714-941
• Seiko 4441-187
• Seiko 5250-563
• Seiko 7192-614