Seiko Cal. 5638 - 154

The Seiko 5638-154 represents an important milestone in Seiko's 1983 lineup. Powered by the 5638 caliber with 22j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-d75596f0ae5e]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1983

Related Models

• Seiko 5214-662
• Seiko 3836-121
• Seiko 4585-700
• Seiko 5626-316
• Seiko 6277-944
• Seiko 4461-135
• Seiko 7014-875
• Seiko 3843-105
• Seiko 6376-539
• Seiko 6233-511
• Seiko 7072-136
• Seiko 6254-185