Headphones; Smartphones; Smartwatches; Batteries, electric; Cell phone battery chargers; Cell phone cases; Lenses for smartphone cameras; Protective covers and cases for cell phones; Protective covers and cases for cell phones, laptops and portable media players; Protective films adapted for smartphones; Smartwatch straps; Stands adapted for mobile phones; Stands adapted for tablet computers; Virtual reality headsets adapted for use in playing video games; Wearable activity trackers