Seiko Cal. 6398 - 997

This Solar model from 1978 features a 44mm Hardlex-Coated Steel case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-61421084060c]

Also known as: Monster, Helmet

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1978

Related Models

• Seiko 6328-490
• Seiko 7162-902
• Seiko 6138-511
• Seiko 6352-633
• Seiko 5240-524
• Seiko 4576-719
• Seiko 7064-171
• Seiko 7128-785
• Seiko 7034-167
• Seiko 4526-360
• Seiko 5651-853
• Seiko 6175-848