DUALBOOST

Batteries; Earbuds; Headphones; Microphones; Spectacles; Adapter cables for headphones; Chargers for batteries; Data cables; Downloadable computer software for users to optimize and personalize electronic devices, customize electronic devices, manage electronic wireless communication devices, update electronic devices to enhance performance and features, get an overview of connected electronic devices and charging status, and give feedback on electronic devices; Earphones for cellular telephones; Electronic memories; Noise cancelling headphones; Personal headphones for sound transmitting apparatuses; Portable media players; Recorded computer application software for mobile phones, namely, software for users to optimize and personalize electronic devices, customize electronic devices, manage electronic wireless communication devices, update electronic devices to enhance performance and features, get an overview of connected electronic devices and charging status, and give feedback on electronic devices; Smart glasses; Virtual reality headsets; Wireless headphones; Wireless headsets for smartphones; Wireless speakers