Seiko Cal. 3878 - 187

The 3878-187 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3878 caliber with 27j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-87a4ff9e939a]

Also known as: Bullhead, Rally

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1993

Related Models

• Seiko 0765-363
• Seiko 0788-534
• Seiko 3824-342
• Seiko 6683-324
• Seiko 5631-896
• Seiko 5650-798
• Seiko 6180-548
• Seiko 6675-372
• Seiko 6216-298
• Seiko 4450-416
• Seiko 6312-619
• Seiko 5617-877