Seiko Cal. 6657 - 237

The Seiko 6657-237 represents an important milestone in Seiko's 1988 lineup. With its 18mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-a7cc9cc72795]

Also known as: Silverwave

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1988

Related Models

• Seiko 6316-184
• Seiko 6241-914
• Seiko 5628-381
• Seiko 5242-861
• Seiko 7166-815
• Seiko 3892-900
• Seiko 3899-874
• Seiko 6253-917
• Seiko 7181-810
• Seiko 5246-686
• Seiko 4444-882
• Seiko 6667-701