Adapter plugs; Audio headphones; Battery chargers; Carrying cases, holders, protective cases and stands featuring powersupply connectors, adaptors, speakers and battery charging devices, specially adapted for use with handheld digital electronic devices, namely, cell phones; Ear phones; Light switches; MP3 players; Power switches; Protective helmets for sports; Smart watches; Smartglasses; Sports glasses; USB cables for cellphones; USB card readers; GPS tracking devices