Seiko Cal. 4442 - 520

The Seiko 4442-520 represents an important milestone in Seiko's 1992 lineup. Powered by the 4442 caliber with 18j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-7564c7e85980]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1992

Related Models

• Seiko 4469-516
• Seiko 6269-289
• Seiko 5263-284
• Seiko 5227-975
• Seiko 4510-488
• Seiko 7068-994
• Seiko 6393-580
• Seiko 3888-810
• Seiko 6648-604
• Seiko 6296-154
• Seiko 3814-579
• Seiko 7110-550