Seiko Cal. 3870 - 181

The 3870-181 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3870 caliber with 33j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-cafda89df684]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1973

Related Models

• Seiko 0784-281
• Seiko 7172-914
• Seiko 6187-251
• Seiko 0738-164
• Seiko 4592-438
• Seiko 6292-106
• Seiko 5639-106
• Seiko 4499-702
• Seiko 6616-622
• Seiko 6221-422
• Seiko 5296-515
• Seiko 0735-632