Seiko Cal. 6388 - 613

Released in 1968, the Cal. 6388 with design code 613 was part of Seiko's domestic market collection. With its 20mm lug width and 8.4mm profile, it sits comfortably on most wrists. [seikata-wm-ce2fa6619cd2]

Also known as: UFO, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1968

Related Models

• Seiko 0725-385
• Seiko 4491-154
• Seiko 4450-123
• Seiko 4420-670
• Seiko 5230-974
• Seiko 6655-456
• Seiko 5274-457
• Seiko 6682-752
• Seiko 6177-730
• Seiko 7159-849
• Seiko 5689-628
• Seiko 7074-303