Note: I purchased this Sonic Cleaner through Hottest Deal Ever "HDE" the One-Star rating is for them, not the item, and not for Amazon.

The Cordless Sonic Cleaner gets one star because the item was supposed to be new. Box is shelf worn, not factory sealed in anyway, and the item itself had muddy-ish hand prints on its exterior. The item was cheap enough that it did not make sense to send it back so after throughly disinfecting and cleaning the unit we tried it. It worked fine, though the On/Off button is very loose. It is being used on Invisaligns with the Retainer Bright tablets.

This is a good teen and/or travel unit and "Yes" we would purchase it again... just not from HDE.