Seiko Cal. 6220 - 637

This Hand-Winding model from 1987 features a 38mm Hardlex-Coated Steel case. Powered by the 6220 caliber with 18j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-aeecfc050bc6]

Also known as: Sea Horse, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1987

Related Models

• Seiko 6155-304
• Seiko 6168-506
• Seiko 4583-819
• Seiko 6360-271
• Seiko 5612-713
• Seiko 6340-109
• Seiko 7122-542
• Seiko 5272-513
• Seiko 5264-305
• Seiko 3830-968
• Seiko 4435-479
• Seiko 6675-199