Seiko Cal. 4550 - 891

The Seiko 4550-891 represents an important milestone in Seiko's 1973 lineup. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-5c4bdff03dfd]

Also known as: Monster, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1973

Related Models

• Seiko 0794-825
• Seiko 4417-612
• Seiko 5250-597
• Seiko 4479-221
• Seiko 4478-394
• Seiko 4464-854
• Seiko 6257-172
• Seiko 0773-183
• Seiko 6186-613
• Seiko 5291-141
• Seiko 5657-521
• Seiko 4437-793