I have the Soniclear Petite and love it. It's great for cleaning the skin and exfoliating the skin. My skin always feels great after using it. I have acne prone skin that can be sensitive, but it hasn't been a problem. The petite version is great for travel and water proof. It charges using a USB cable and a charge last for awhile. It comes with an antimicrobial cleansing brush that only needs to be replaced every 6 months.