COMBINATION CONVENIENCE AND SECURITY Keep your eyes on the road as you speak without distractions, thanks to this loudspeaker that you can connect simultaneously to two phones Multi-function speakerphoneAnswer calls, hang up calls, reject calls,redial last number , volume control, play music.Up to 20 hours talk time and 60 days standby time. CONVERSE CLEARLYWith our built-in speakers, echo background noise-reduction feature, and volume controls- your calls will be crystal clear no matter where you are EXCEPTIONAL AUDIO QUALITYYou will be able to make and receive calls with full and crystal sound thanks to the echo cancellation and background noise (we suggest NOT to use it in trucks) BUILT-INMOTION SENSORStart driving without delay as this Bluetooth hands-free car kit switches to Auto Power and connects with your phone when car door is opened