Adjustable smartphone and PC tablet stabilizers and mounts; Audio headphones; Adapter rings for attaching objectives on cameras; Audio speakers; Calculating machines, data-processing equipment and computers; Carrying cases, holders, protective cases and stands featuring power supply connectors, adaptors, speakers and battery charging devices, specially adapted for use with handheld digital electronic devices, namely, cell phones; Cases for music, audio and related electronic equipment, namely, cases for audio tuners, audio receivers, amplifiers, tape players, compact disc players, MP3 controllers/players, audio mixers, audio speakers in the nature of music studio monitors, microphones, audio speakers, compact discs, audio tapes, portable computers, antennas, phonographic record players, audio recording equipment, and the cables associated with all of the foregoing equipment; Computer bags; Computer cursor control devices, namely, computer mouse; Computer cursor control devices, namely, light pens; Computer hardware and peripheral devices; Computer keyboard keycaps; Computer keyboards; Computer monitors