Seiko Cal. 6138 - 655

The 6138-655 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-179532456ae2]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1978

Related Models

• Seiko 6260-449
• Seiko 5285-953
• Seiko 7169-358
• Seiko 3873-250
• Seiko 5270-839
• Seiko 6631-594
• Seiko 4423-837
• Seiko 3852-834
• Seiko 6618-600
• Seiko 4487-279
• Seiko 5255-970
• Seiko 5637-306