Seiko Cal. 0763 - 663

The Seiko 0763-663 represents an important milestone in Seiko's 1971 lineup. With its 22mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-656679653249]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1971

Related Models

• Seiko 6178-840
• Seiko 4549-798
• Seiko 7063-881
• Seiko 6365-356
• Seiko 0787-974
• Seiko 0781-418
• Seiko 3810-439
• Seiko 7180-442
• Seiko 6394-495
• Seiko 7098-558
• Seiko 3875-654
• Seiko 0726-901