Seiko Cal. 4428 - 941

This Kinetic model from 1978 features a 41mm Hardlex-Coated Steel case. Powered by the 4428 caliber with 22j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-5fa5327a0a4e]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1978

Related Models

• Seiko 4468-220
• Seiko 0781-155
• Seiko 5618-339
• Seiko 5290-415
• Seiko 5699-351
• Seiko 4560-821
• Seiko 4491-734
• Seiko 0750-226
• Seiko 5218-822
• Seiko 0745-232
• Seiko 6379-625
• Seiko 7093-454