Seiko Cal. 6687 - 248

This Spring Drive model from 1974 features a 41mm Titanium case. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-4a20fc7c43e5]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1974

Related Models

• Seiko 6191-118
• Seiko 6379-892
• Seiko 4589-676
• Seiko 5654-514
• Seiko 6240-194
• Seiko 6236-884
• Seiko 4532-175
• Seiko 3856-256
• Seiko 6380-296
• Seiko 4420-821
• Seiko 3816-329
• Seiko 5648-180