Seiko Cal. 5255 - 139

The 5255-139 is a sought-after Automatic piece from Seiko's golden era. With its 20mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-b037e62ce3d6]

Also known as: Tuna, UFO

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1973

Related Models

• Seiko 7089-165
• Seiko 0774-669
• Seiko 6184-748
• Seiko 7092-541
• Seiko 6694-896
• Seiko 5691-933
• Seiko 5666-904
• Seiko 7056-567
• Seiko 3826-822
• Seiko 6142-710
• Seiko 7198-763
• Seiko 7090-189