Seiko Cal. 4477 - 920

The Seiko 4477-920 represents an important milestone in Seiko's 1992 lineup. Powered by the 4477 caliber with 31j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-6d3dce0d4590]

Also known as: Monster, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1992

Related Models

• Seiko 6639-968
• Seiko 7197-697
• Seiko 5667-400
• Seiko 6268-242
• Seiko 7166-746
• Seiko 6659-216
• Seiko 4546-711
• Seiko 4430-800
• Seiko 6674-377
• Seiko 6390-610
• Seiko 6655-829
• Seiko 0782-606