Seiko Cal. 6657 - 415

This Automatic model from 1990 features a 45mm Titanium case. It features a Black dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-98df282879f1]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1990

Related Models

• Seiko 5629-491
• Seiko 6386-415
• Seiko 6371-252
• Seiko 4417-692
• Seiko 3891-900
• Seiko 7158-195
• Seiko 0795-190
• Seiko 7089-665
• Seiko 4449-138
• Seiko 6151-375
• Seiko 6246-202
• Seiko 4516-878