Seiko Cal. 3864 - 400

This Spring Drive model from 1968 features a 44mm Hardlex-Coated Steel case. With its 18mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-6f2f4edb8a5e]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1968

Related Models

• Seiko 5272-167
• Seiko 7076-722
• Seiko 6639-205
• Seiko 0715-222
• Seiko 3816-478
• Seiko 3821-671
• Seiko 3830-991
• Seiko 0772-579
• Seiko 6289-274
• Seiko 7130-514
• Seiko 4497-295
• Seiko 7166-241