Seiko Cal. 6647 - 241

This Hand-Winding model from 1988 features a 46mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-14aa3d6864fc]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1988

Related Models

• Seiko 6656-600
• Seiko 7029-367
• Seiko 6145-988
• Seiko 7031-856
• Seiko 5233-972
• Seiko 6246-214
• Seiko 6693-146
• Seiko 6629-174
• Seiko 7149-972
• Seiko 7070-704
• Seiko 7060-473
• Seiko 4523-421