Seiko Cal. 4438 - 150

The Seiko 4438-150 represents an important milestone in Seiko's 1965 lineup. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-e0376bdc3042]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1965

Related Models

• Seiko 6368-912
• Seiko 5241-924
• Seiko 6643-949
• Seiko 6378-209
• Seiko 7053-825
• Seiko 7192-891
• Seiko 6118-353
• Seiko 7091-931
• Seiko 6363-578
• Seiko 4515-509
• Seiko 3878-773
• Seiko 7073-235