Seiko Cal. 6657 - 159

This Spring Drive model from 1997 features a 37mm PVD Black case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-4c2427b64a4f]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1997

Related Models

• Seiko 6297-942
• Seiko 5211-159
• Seiko 0738-126
• Seiko 6337-991
• Seiko 3855-915
• Seiko 6176-653
• Seiko 7092-520
• Seiko 4592-755
• Seiko 6616-841
• Seiko 4545-175
• Seiko 0755-317
• Seiko 6693-483