I thought it would be heavy, but it's a lightweight plastic material. It looks portable. The finish is great. I am very sorry that it is not Macsafe. When the mobile phone charging part is built and combined, the binding site looks slightly weak, but there is no problem unless it is opened and closed frequently. It is good to light up on the right side when charging. I don't know why it sometimes turns off. Since the watch part is removable, you can carry it elsewhere.