Seiko Cal. 6649 - 763

The Seiko 6649-763 represents an important milestone in Seiko's 1968 lineup. It features a Black dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-0abb6fa8d9d8]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

42mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1968

Related Models

• Seiko 6217-112
• Seiko 4536-211
• Seiko 4437-415
• Seiko 6129-954
• Seiko 7042-440
• Seiko 6274-847
• Seiko 7052-900
• Seiko 6687-511
• Seiko 6389-789
• Seiko 5675-826
• Seiko 4523-897
• Seiko 6180-856