XINGDONGCHI Electronics Tone Infinim Bluetooth Stereo Headset, Wireless Headphone Handsfree for Phone Call, Music, Sport, for Lg Apple Samsung HTC (Black) 1. Provide High-Fidelity - Stereo music and Crystal Clear HD sound. Built-in Apt-x Technology Reproduces Cd Quality Sound Over a Bluetooth Connection. 2. Support iOS device battery display, Multi-connection up to 2 devices 3. Sports Wireless Headphone - Sweat-proof and Water-proof; Compatible with most Bluetooth-enabled devices with 10-meter working distance 4. Noise Cancelling - With excellent sound effect collection, superior sound isolation, efficiently reduces external noise. 5. Retractable Neckband Style - Easily pressing the retractable cable button to adjust the length of the line