Great device for charging my smart phone and my watch at the same time. Its not heavy at all and every time I hit something and the speaker jump, makes an empty sound and it doesnt get damage. It stays clean and feels great. I also will try leaving the bag partially unzipped at the top for ventilation, but that does defeat the purpose of waterproofing. Things that are behind you to the left right and center sound the same as if you were looking in front, its hard to gauge just where the sounds are coming from. I am a guy size 6, but this women size 7 fit perfectly. Its called the ASUS Xonar DG 5. I?ve NEVER had to size up. The black faded to a brown after I left them in the sun for the afternoon to dry which at first upset me then I realized well now I have a brown pair ;-) I am reordering these right now so I can have the black again but will take caution of not leaving them outside . I?m a hairdresser and on my feet long hours and have bunions, these shoes are amazing!