I restore vintage mechanical clocks as a hobby. This VEVOR model ultrasonic cleaner is approximately gallon-sized. It has plenty of space to immerse the wheels, gears, pallets, plates and miscellaneous parts of a typical vintage brass clockworks from the 1800s and 1900s. With an appropriate ammoniated cleaning solution, the parts come out shiny and clean as new, after only four minutes. 100 years of oil, tobacco smoke, grease and grime gone in 240 seconds!For smaller jobs, I can fill the tank with a gallon of water and a teaspoon of dawn dish soap, then put cleaning solution in a small "auxiliary" jar, add the parts to the jar, screw on the top, put the jar in the included immersible basket, set the basket in the water, and three minutes later I have "new" parts! This conserves on cleaning solution.I'm very pleased with this product, and have no complaints.