Earphones; Batteries for mobile telephones; Battery chargers for smartphones; Data cables; Downloadable application programming interface (API) software; Downloadable mobile applications for managing bank accounts; Headsets for telephones; Power adapters; Rechargeable batteries; Solid-state batteries; Supercapacitors for energy storage; Ultracapacitors for energy storage; USB cables for cellphones; USB charging ports; Wireless earbuds