Seiko Cal. 4443 - 905

This Spring Drive model from 1987 features a 42mm Titanium case. Powered by the 4443 caliber with 21j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-fdce35ba4ac5]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1987

Related Models

• Seiko 6228-944
• Seiko 5210-250
• Seiko 6321-917
• Seiko 5219-519
• Seiko 4519-522
• Seiko 3811-931
• Seiko 5219-106
• Seiko 5643-422
• Seiko 7179-462
• Seiko 4422-591
• Seiko 5270-415
• Seiko 4452-419