Flexzion Stainless Steel Heated Ultrasonic Cleaner with Adjustable Timer & Temperature, Cleaner Machine for Jewelry Watches Glasses Spectacles Metal Parts Lab Tools Coins (6 Liters) Ceramic heater element allows for a more efficient heating process, quickly reaching the selected temperature; 68-176 degree adjustable heating settings. Powerful ultrasonic transducer creates a more uniform distribution of ultrasonic waves 6 liter large capacity cleaning tank is suitable for cleaning multiple objects at once, such as dental equipment, steel parts, watches and so on Moisture-proofed and anti-corrosion PCB board allows it to be used under damp environment; No welding gap on the water tank for better waterproof ability Adjustable timer allows user to set the desired duration from 0 to 20 minutes; Features a drainage valve to get rid of the water when finished