Seiko Cal. 3878 - 897

The Seiko 3878-897 represents an important milestone in Seiko's 1974 lineup. With its 20mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-5b47c999b170]

Also known as: Helmet, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Champagne

Jewels

23j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1974

Related Models

• Seiko 7166-507
• Seiko 6369-515
• Seiko 6273-997
• Seiko 4491-294
• Seiko 5657-394
• Seiko 3827-519
• Seiko 6351-737
• Seiko 3829-973
• Seiko 6168-982
• Seiko 7042-185
• Seiko 5687-371
• Seiko 4460-929