Seiko Cal. 4440 - 205

The Seiko 4440-205 represents an important milestone in Seiko's 1966 lineup. Powered by the 4440 caliber with 28j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-7c95816b5f74]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1966

Related Models

• Seiko 0717-774
• Seiko 6676-604
• Seiko 6171-936
• Seiko 0745-891
• Seiko 7184-286
• Seiko 3853-767
• Seiko 0793-241
• Seiko 6172-946
• Seiko 5676-941
• Seiko 6198-301
• Seiko 3816-148
• Seiko 4484-639