Seiko Cal. 5221 - 840

This Automatic model from 1966 features a 41mm PVD Black case. Powered by the 5221 caliber with 20j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-313d754f84cb]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1966

Related Models

• Seiko 6391-676
• Seiko 3894-295
• Seiko 6682-119
• Seiko 3844-684
• Seiko 4423-279
• Seiko 5213-402
• Seiko 4468-401
• Seiko 5643-938
• Seiko 7025-443
• Seiko 6349-523
• Seiko 5217-433
• Seiko 3859-840