TunePhonik BTX20 On-Ear Bluetooth Headphones Stereo Wireless Headset [Green|Gray] ADVANCED SOUND BLUETOOTH TECHNOLOGY: Features excellent low, mid and high frequency response and noise-reduction technology for true high fidelity sound up to 10 meters away from a Bluetooth device IDEAL HEADPHONES FOR RUNNERS: Soft, sweat-proof foam ear pads and well-balanced flexible headband are ideal for running or other physical activities LIGHTWEIGHT AND PORTABLE ON-EAR HEADPHONES: Folds up neatly for easy storage and includes hard shell protective carrying case FAST PAIRING BLUETOOTH TECHNOLOGY: Quickly connects to Bluetooth-enabled devices and supports the latest A2DP and HFP Bluetooth profiles VOICE AND MUSIC: Includes built-in high definition microphone for crystal-clear calls and voice prompt announcement functions