Seiko Cal. 6656 - 748

The Seiko 6656-748 represents an important milestone in Seiko's 1984 lineup. It features a Silver dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-77389b282553]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1984

Related Models

• Seiko 3844-834
• Seiko 6612-728
• Seiko 6684-133
• Seiko 7060-983
• Seiko 6113-725
• Seiko 6644-282
• Seiko 5623-571
• Seiko 6124-737
• Seiko 5210-268
• Seiko 6347-734
• Seiko 4584-472
• Seiko 6345-146