X-BOSS Bluetooth V2.1 technology Stereo Bluetooth Wireless Headphone w/answering/rejecting a call & voice calling & music switch for the latest Smartphones & Cellphones (Red) Bluetooth V2.1 technology Hands-free calling on the go Long talk time and standby time Features the functions of answering/rejecting a call, voice calling, incoming call prompt, volume control, battery status indicator, music switch, automatic Bluetooth match and media play Usually Buy is a registered trademark and is the only authorized seller of Usually Buy branded products