Seiko Cal. 4445 - 337

The Seiko 4445-337 represents an important milestone in Seiko's 1971 lineup. With its 21mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-a222e92fa105]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1971

Related Models

• Seiko 4537-428
• Seiko 3824-871
• Seiko 5216-174
• Seiko 3816-342
• Seiko 6112-352
• Seiko 4517-998
• Seiko 6237-139
• Seiko 5642-436
• Seiko 7092-547
• Seiko 6222-681
• Seiko 6290-850
• Seiko 3890-603