Seiko Cal. 6658 - 661

The Seiko 6658-661 represents an important milestone in Seiko's 1978 lineup. It features a Cream dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-70bd145ad3b0]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Cream

Jewels

30j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1978

Related Models

• Seiko 4591-921
• Seiko 6194-893
• Seiko 6240-774
• Seiko 5658-684
• Seiko 5666-470
• Seiko 4541-381
• Seiko 6291-325
• Seiko 5697-182
• Seiko 6263-442
• Seiko 6258-747
• Seiko 5622-499
• Seiko 6252-218