Seiko Cal. 4550 - 198

The Seiko 4550-198 represents an important milestone in Seiko's 1971 lineup. The Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-e1103c9b976b]

Also known as: Sumo, Emperor

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1971

Related Models

• Seiko 4410-893
• Seiko 4492-549
• Seiko 7016-220
• Seiko 6655-270
• Seiko 5273-803
• Seiko 6243-731
• Seiko 6629-599
• Seiko 5236-795
• Seiko 0740-372
• Seiko 6159-241
• Seiko 6379-804
• Seiko 6624-631