Features: **1. KEEP BASE DRY (Crucial):**The power base is **NOT waterproof**. Never submerge it or rinse it under a tap. Always wipe the bottom of the detachable tank completely dry before placing it back on the base to prevent short circuits. **2. ITEM COMPATIBILITY (AVOID DAMAGE):**DO NOT CLEAN: Soft or porous gemstones (e.g., Pearls, Opals, Emeralds, Amber, Coral, Turquoise), costume jewelry with glued stones, or watches that are not water-resistant (less than 30M waterproof). Ultrasonic waves may damage these items or loosen the glue. **3. POWER ADAPTER:**Only use the original DC 12V adapter provided with the product. Using incompatible voltage adapters may damage the unit or cause overheating.