Seiko Cal. 3864 - 447

The Seiko 3864-447 represents an important milestone in Seiko's 1990 lineup. Powered by the 3864 caliber with 18j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-b1f83132f66d]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

18j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1990

Related Models

• Seiko 6178-945
• Seiko 5661-397
• Seiko 7089-279
• Seiko 5679-708
• Seiko 5222-591
• Seiko 4422-622
• Seiko 5247-248
• Seiko 0710-555
• Seiko 6319-871
• Seiko 5234-949
• Seiko 3842-418
• Seiko 3825-430