Seiko Cal. 6658 - 393

This Spring Drive model from 1984 features a 40mm Hardlex-Coated Steel case. It features a Green dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-ffa6665a1e12]

Also known as: Turtle, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1984

Related Models

• Seiko 4497-582
• Seiko 7094-556
• Seiko 6665-792
• Seiko 5615-441
• Seiko 4426-377
• Seiko 6298-618
• Seiko 6148-280
• Seiko 0733-357
• Seiko 4580-902
• Seiko 4426-711
• Seiko 6297-409
• Seiko 5635-799