Seiko Cal. 4550 - 743

The 4550-743 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4550 caliber with 30j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-b6016ae5ebac]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1974

Related Models

• Seiko 4578-984
• Seiko 5253-748
• Seiko 7042-424
• Seiko 0734-831
• Seiko 5622-504
• Seiko 4482-563
• Seiko 4481-958
• Seiko 0750-433
• Seiko 6228-666
• Seiko 0793-597
• Seiko 5663-574
• Seiko 6633-322