Seiko Cal. 3878 - 240

The 3878-240 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-51af63ac31d1]

Also known as: Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1976

Related Models

• Seiko 4447-291
• Seiko 7012-463
• Seiko 4494-538
• Seiko 5259-641
• Seiko 6261-623
• Seiko 5678-821
• Seiko 5651-134
• Seiko 5297-351
• Seiko 6223-234
• Seiko 7019-116
• Seiko 3863-607
• Seiko 6623-404