Seiko Cal. 5638 - 838

The Seiko 5638-838 represents an important milestone in Seiko's 1985 lineup. Powered by the 5638 caliber with 20j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-10ef7b79e9fa]

Also known as: Shogun, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1985

Related Models

• Seiko 4482-575
• Seiko 5620-952
• Seiko 4552-531
• Seiko 7128-658
• Seiko 4453-937
• Seiko 5221-323
• Seiko 5259-863
• Seiko 7181-442
• Seiko 7129-881
• Seiko 5286-319
• Seiko 6167-475
• Seiko 4512-359