Features-Bluetooth-3-0-Bluetooth-intercom-up-to-900-meters-980-yards-Four-way-conference-intercom-Conference-phone-call-with-intercom-participant-Multipoint-for-mobile-phone-GPS-Voice-prompts-Bluetooth-stereo-headset-for-Bluetooth-audio-devices-such-as-MP3-players-Bluetooth-music-playback-control-by-AVRCP-play-pause-track-forward-&-track-back-Easy-operation-by-versatile-Jog-Dial-patent-pending-Sufficient-sound-level-with-integrated-audio-booster-Bluetooth-handsfree-for-Bluetooth-mobile-phones-Bluetooth-headset-or-stereo-headset-for-Bluetooth-GPS-navigation-Stereo-music-by-3-5mm-audio-cable-Water-resistant-for-use-in-poor-weather-Crystal-clear-&-natural-sound-quality-Up-to-12-hours-talk-time-10-days-st&-by-time-Can-be-used-while-charging-on-road-trips-Individual-volume-control-for-each-audio-source-Firmware-upgradeable-Two-year-warranty-for-complete-peace-of-mind-in-open-terrain-Package-Content-Headset-Main-Unit-Speaker-Microphone-Clamp-Unit-with-Universal-Microphone-Kit-USB (Universal Serial Bus)-Power-amp-Data-Cable-Micro-USB (Universal Serial Bus)-Type-Cigarette-Charger-Micro-USB (Universal Serial Bus)-Type-3-5mm-Stereo-Audio-Cable-Glued-Surface-Mounting-Adaptor-Microphone-Sponge-Velcro-Pads-for-Speakers-Allen-Wrench-Speaker-Pads-Microphone-Cap