Seiko Cal. 3866 - 525

The 3866-525 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3866 caliber with 34j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-a50eea43001a]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Cream

Jewels

34j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1993

Related Models

• Seiko 6285-721
• Seiko 4538-585
• Seiko 5247-365
• Seiko 6634-560
• Seiko 0796-898
• Seiko 3884-259
• Seiko 5219-180
• Seiko 0753-639
• Seiko 5673-239
• Seiko 6617-541
• Seiko 6382-391
• Seiko 7122-871