Seiko Cal. 4423 - 412

The Seiko 4423-412 represents an important milestone in Seiko's 1997 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-ec08d3273462]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1997

Related Models

• Seiko 3854-258
• Seiko 7069-377
• Seiko 5276-300
• Seiko 3864-571
• Seiko 5627-836
• Seiko 6231-354
• Seiko 5632-588
• Seiko 4576-380
• Seiko 3892-160
• Seiko 6277-443
• Seiko 7196-399
• Seiko 5664-156