Seiko Cal. 6643 - 648

This Quartz model from 1993 features a 36mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-699bec906b3a]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1993

Related Models

• Seiko 6644-140
• Seiko 6394-857
• Seiko 4578-538
• Seiko 6358-373
• Seiko 4410-997
• Seiko 6347-607
• Seiko 4497-822
• Seiko 6311-770
• Seiko 6186-190
• Seiko 6228-572
• Seiko 4529-118
• Seiko 6210-362