SOAIY S-32 Voice Command Hands-Free Bluetooth in-car Speakerphone, Wireless Bluetooth Car Kit for Safely Driving with Shake Power On Function Automatically Power On/Off If You Want To Restart The Device, You Just Need To Shake Anything Nearby(Like Closing The Car Door)That Can Awake The S-32 Back To Active Mode, and It Will Connect Your Phone Automatically on the premise of your phone's bluetooth is open before the S-32 power on. Otherwise you need to connect the bluetooth by yourself. If There Is No Mobile Phone Connected In 180 Seconds,The Device Will Turn Off Automatically.Saving Power and Energy. Can Activate Siri on iPhone or Android phone voice commands.(Phone dependent),Make a Call by Siri or other Voice Command.Then You Can Make A Call By Saying " Call XXX". Say "Yes" To Answer The Incoming Call Or Say "No" To Decline It After You Hear The Incoming Phone Numbers. Answer, End, Decline Incoming Calls. Last Call Redial; Incoming Call Number Reading; Play Music From Your Mobile Phones; Advanced Multi-use For Connection To 2 Bluetooth Devices At Same Time, Turn Off Automatically When Bluetooth Connection Is Unavailable, Saving Power And Ensuring Safety. Talk Time Up To 20 Hours & Bluetooth V4.1, Activate Siri on iPhone or Android phone commands.(Phone dependent),Bluetooth V4.1, designed for great sound ,noise cancellation technology and stereo speaker - You can hear clear calls and wonderful music even in downtown.