Seiko Cal. 4427 - 730

The Seiko 4427-730 represents an important milestone in Seiko's 1977 lineup. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-461c3eba7a01]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1977

Related Models

• Seiko 3894-582
• Seiko 4427-734
• Seiko 7088-480
• Seiko 4562-781
• Seiko 0733-876
• Seiko 6298-899
• Seiko 0719-953
• Seiko 6642-824
• Seiko 3847-393
• Seiko 6118-783
• Seiko 5222-586
• Seiko 3856-463