Seiko Cal. 5638 - 419

The Seiko 5638-419 represents an important milestone in Seiko's 1975 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-03cc0aa41543]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1975

Related Models

• Seiko 6291-325
• Seiko 0741-588
• Seiko 6360-456
• Seiko 5215-687
• Seiko 4545-648
• Seiko 4575-976
• Seiko 5681-638
• Seiko 7098-583
• Seiko 7063-745
• Seiko 7018-962
• Seiko 7139-421
• Seiko 4532-501