I love this product, it is very unique, can’t believe now one else have thought of this. The packaging is awesome, apple like presentation well thought out. As you can tell by my demonstration its super easy to use. The brush last for about 5 hours and uses a stander micro USB wire. I was a little nervous about the guards coming off but there little taps on the outside that locks them in pretty well. I love the cut brush now I could keep a fresh cut year round. When I first got it my hair was too low to really see good results, but now it is my pride and joy. I was a concern that the motors wouldn’t be powerful enough but the work like a charm. I hope they stand the test of time.