Seiko Cal. 4423 - 847

The Seiko 4423-847 represents an important milestone in Seiko's 1987 lineup. Powered by the 4423 caliber with 23j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-3dd8e80c524c]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Navy

Jewels

23j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1987

Related Models

• Seiko 6350-890
• Seiko 5641-328
• Seiko 7121-552
• Seiko 6199-545
• Seiko 4466-958
• Seiko 7030-454
• Seiko 3868-379
• Seiko 5292-426
• Seiko 4414-991
• Seiko 5251-506
• Seiko 5622-238
• Seiko 0762-203