Seiko gold refers to Seiko gold, and 999 gold refers to thousands of gold. Their gold content is different, one refers to the process and the other refers to the purity.

Secondly, the color and hardness are different, and then the market value and price are different. Seiko gold is fine in workmanship, and its style and appearance are much better. When purchasing goods, the manual fee is higher than that of ordinary thousand gold jewelry, so it is more expensive.