Seiko Cal. 5658 - 639

The Seiko 5658-639 represents an important milestone in Seiko's 1976 lineup. It features a Silver dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-4602fa09b74f]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

19j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1976

Related Models

• Seiko 6160-459
• Seiko 4422-941
• Seiko 7146-890
• Seiko 4434-262
• Seiko 7096-772
• Seiko 6611-377
• Seiko 6368-409
• Seiko 5258-136
• Seiko 6133-400
• Seiko 5271-829
• Seiko 6129-755
• Seiko 4555-256