I got this Vevor Ultrasonic Cleaner in the 2 liter size for cleaning my jewelry and glasses. Not only does this ultrasonic cleaner seem to be more powerful than the other ultrasonic cleaners I've owned in the past, but this one also has an easy-to-use water temperature control as well as a timer. The temperature of the water can be adjusted up to 80 degrees Celsius, or 176 degrees Fahrenheit to optimize cleaning. The timer is also a convenient feature as it is nice to not have to watch the clock while using this machine. This unit in the 2 liter size is compact but still large enough to clean jewelry or glasses. I use a mixture of water and jewelry cleaning solution to clean my jewelry, and it comes out looking just as good as it does when I have taken it to the jeweler to have it cleaned. My husband remarked that he has never seen my jewelry as sparkly as it does after using this ultrasonic cleaner, and I have to agree with him! I am very happy with this ultrasonic cleaner, and recommend it.