Seiko Cal. 4456 - 644

The Seiko 4456-644 represents an important milestone in Seiko's 1971 lineup. Powered by the 4456 caliber with 34j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-52ffa9e38719]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1971

Related Models

• Seiko 6364-953
• Seiko 6134-664
• Seiko 0754-770
• Seiko 7051-659
• Seiko 0714-478
• Seiko 4480-271
• Seiko 4556-791
• Seiko 4432-842
• Seiko 3847-765
• Seiko 7062-736
• Seiko 6322-800
• Seiko 6176-430