Seiko Cal. 6390 - 990

This Automatic model from 1991 features a 38mm Hardlex-Coated Steel case. It features a White dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-3a8d0fc6439f]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1991

Related Models

• Seiko 0717-498
• Seiko 5673-130
• Seiko 6310-550
• Seiko 4586-947
• Seiko 7133-720
• Seiko 6626-546
• Seiko 5679-517
• Seiko 6658-207
• Seiko 5264-122
• Seiko 6360-778
• Seiko 5238-808
• Seiko 5243-689