Seiko Cal. 3840 - 250

This Quartz model from 1971 features a 40mm Gold-Plated case. With its 20mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-824a439b5211]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1971

Related Models

• Seiko 0713-890
• Seiko 4414-865
• Seiko 5697-959
• Seiko 7143-578
• Seiko 5255-189
• Seiko 6215-189
• Seiko 6246-418
• Seiko 7135-144
• Seiko 7043-415
• Seiko 4523-157
• Seiko 6695-476
• Seiko 3823-357