Seiko Cal. 6647 - 284

Released in 1974, the Cal. 6647 with design code 284 was part of Seiko's domestic market collection. With its 18mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-03ce3662cd7c]

Also known as: Turtle, Sea Horse

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1974

Related Models

• Seiko 3872-359
• Seiko 5262-841
• Seiko 0735-483
• Seiko 7092-539
• Seiko 4470-785
• Seiko 0746-832
• Seiko 7097-954
• Seiko 3842-154
• Seiko 5297-928
• Seiko 3853-990
• Seiko 4553-252
• Seiko 6677-105