Mobile phone cases featuring rechargeable batteries; Remote controls for radios, televisions, stereos; Wireless headsets for smartphones; Integrated circuits and integrated circuit cores for use in wireless communications and wireless communication equipment and apparati and digital signal processors (DSP); Electronic test and measurement devices for use in the fields of networks and telecommunications, namely, instrumentation used to test and certify new and existing data and voice communication cable and coaxial cable; Microphones; Telephone apparatus; Radio receivers