Seiko Cal. 6643 - 758

The Seiko 6643-758 represents an important milestone in Seiko's 1998 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-dddf51fa9beb]

Also known as: Shogun, Crown

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1998

Related Models

• Seiko 6196-191
• Seiko 7177-989
• Seiko 7034-449
• Seiko 4595-295
• Seiko 6657-803
• Seiko 6134-339
• Seiko 6239-654
• Seiko 5671-990
• Seiko 3860-403
• Seiko 6384-773
• Seiko 5629-950
• Seiko 6188-843