Earphone design with voice-activated controls offers hands-free operation of your device For use with most Bluetooth-compatible cell phones. Earphone design allows discreet listening. Bluetooth technology enables you to listen wirelessly to streaming music, videos, Internet radio stations or driving directions from your compatible device. Dual-microphone noise reduction provides clearer sound. DeepSleep(TM) mode helps conserve power. Provides up to 7 hours of talk time on a single charge. Voice answer and call management capability gives you control without having to press buttons. Plantronics(R) Marque 2 M165 Bluetooth(R) Headset, Black is one of many Bluetooth/Cell Phone Headsets available through Office Depot. Made by Plantronics.