Monoprice Premium Virtual Surround Sound Bluetooth On-the-Ear Headphones with Apt-X - Retail Packaging - Black Wirelessly listen to your favorite music while traveling, working out, or on the go with these Premium Virtual Surround Sound Bluetooth On-the-Ear Headphones with Apt-X from Monoprice These headphones are the perfect companion for any music lover The headphones are collapsible for easy transportation and utilize Bluetooth version 4