Seiko Cal. 4427 - 389

The Seiko 4427-389 represents an important milestone in Seiko's 1968 lineup. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-09a40d2ad879]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1968

Related Models

• Seiko 0761-894
• Seiko 7083-181
• Seiko 6245-310
• Seiko 4513-359
• Seiko 5623-516
• Seiko 0790-547
• Seiko 7014-591
• Seiko 6234-861
• Seiko 7079-357
• Seiko 7123-278
• Seiko 4444-811
• Seiko 6149-101