This Review Title is Easy to use , but won’t hold a charge and the content is: I love this product it’s a comfortable fit and it heats warms up a bit. I don’t like the whitener I would us this with a different whitener like the Cali smile or glory . I am returning this because it doesn’t hold a charge long enough. Also I don’t like the fact that every four minutes you have to put more whitener on teeth.  I’d rather just put in and wear 16 minutes straight ..There are other information for this review, one is This reviewer did purchase it and the other is 8 people think this review is helpful.