Seiko Cal. 6663 - 821

This Spring Drive model from 1991 features a 38mm Hardlex-Coated Steel case. It features a Silver dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-5d5e59d8b0da]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1991

Related Models

• Seiko 6615-135
• Seiko 4594-974
• Seiko 6192-443
• Seiko 7170-401
• Seiko 6648-238
• Seiko 3855-793
• Seiko 5653-553
• Seiko 4596-447
• Seiko 7119-203
• Seiko 5237-823
• Seiko 6126-870
• Seiko 5229-550