Seiko Cal. 4440 - 620

Released in 1970, the Cal. 4440 with design code 620 was part of Seiko's domestic market collection. With its 20mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-d9dcff5817cd]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1970

Related Models

• Seiko 3853-320
• Seiko 6290-823
• Seiko 6327-797
• Seiko 4495-888
• Seiko 3860-905
• Seiko 5210-322
• Seiko 7153-303
• Seiko 6218-142
• Seiko 3850-361
• Seiko 4414-471
• Seiko 3838-138
• Seiko 4484-165