Seiko Cal. 6378 - 955

The Seiko 6378-955 represents an important milestone in Seiko's 1987 lineup. With its 20mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-2edcc2a3ec83]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1987

Related Models

• Seiko 4568-644
• Seiko 7026-640
• Seiko 3817-527
• Seiko 5657-826
• Seiko 3850-983
• Seiko 4555-180
• Seiko 6358-542
• Seiko 6120-424
• Seiko 7090-414
• Seiko 7128-122
• Seiko 6187-439
• Seiko 5654-841