To use this necklace, simply open the spring - ring fastener and attach your charm or pendant if you want. Then put it around your neck and close the fastener. When wearing it, avoid contact with harsh chemicals like bleach or strong detergents as they can damage the gold. To maintain it, you can gently clean it with a soft cloth and mild soap in warm water. Dry it thoroughly with a clean, soft cloth. Store it in a jewelry box or a soft pouch to prevent scratches and tangles.