Clean compatible small items with this Ultrasonic Jewellery Cleaner, designed to use high-frequency vibration in a liquid-filled chamber according to the exact model. It can be useful for selected jewellery, glasses and other manufacturer-approved items, but material compatibility must be checked before use. Not all jewellery is suitable for ultrasonic cleaning. Soft, porous, treated, fractured or glued gemstones, pearls, opals, emeralds, coral, amber, costume jewellery and items with loose settings may be damaged and should not be placed in the machine unless a jeweller or manufacturer confirms compatibility. Follow the instructions for water level and approved cleaning solution; do not use flammable solvents or unapproved chemicals. Inspect jewellery for loose stones or damaged settings before cleaning. Exact tank capacity, ultrasonic frequency, power rating, timer settings, operating modes, voltage and included accessories vary by model and should be verified before listing. Keep the electrical base and controls dry and unplug the unit before cleaning or maintenance. An ultrasonic cleaner removes compatible surface contamination but does not repair scratches, plating loss, damaged stones or worn jewellery settings.