Seiko Cal. 5663 - 779

The Seiko 5663-779 represents an important milestone in Seiko's 1987 lineup. With its 18mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-46e2253865e2]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1987

Related Models

• Seiko 5277-920
• Seiko 5296-746
• Seiko 5611-883
• Seiko 6277-285
• Seiko 0770-652
• Seiko 3892-344
• Seiko 7173-467
• Seiko 7094-414
• Seiko 3850-481
• Seiko 6132-955
• Seiko 4590-508
• Seiko 7031-963