Very easy, and moving! It's fun! ^_^ Easy and convenient for home use. Cleans rings, necklaces, earrings, etc. beautifully. Simple, even for beginners. Also useful for discolored silver. Especially effective on blackened K18 gold. It cleans them beautifully. How to use it is easy. Clean your jewelry at home with electrolytic cleaning! Also, it's faster and cleaner than the cleaners used by jewelers. Cleaning occurs through electrolysis on the metal surface. It removes discoloration, especially from gold products, and restores their original luster. Caution ⚠️ The cleaning solution is neutral, so it can be used on most gemstones. However, porous gemstones such as pearls, opals, coral, and turquoise are often colored, so prolonged immersion may cause discoloration, alteration, or fading. Use for only 20 seconds to about 1 minute. Do not use on emeralds, as they will discolor. Rinse immediately with water or lukewarm water. The cleaning tank is deeper than other models, making it ideal for cleaning somewhat larger items. I have two of these, This one is a completely new, unused item, although the stickers are deteriorated. Personal opinion: Cleaning K18 gold is the best. However, it seems to clean up even if you don't use it for a full minute. Don't overdo it; do it gradually. Check by dipping and removing the item from the solution. Then, rinse with water or lukewarm water, and you're done. It's not a cleaner; It's an electrolytic cleaner!!! I'm waiting for your questions and comments.