SOUNDODO Handsfree Bluetooth Auto Car Speakerphone Wireless Car Kit Compatibility: Compatible with All Bluetooth Enabled Phones and Device Support Apple Siri /Google Assistant: In standby mode, briefly press Siri/Google Button to start (To activate in standby mode) - World class echo and noise reduction with one microphone to ensure loud and clear voice for phone calls and music time. - Support two phones simultaneously You can connect with two smart phones with the Multi-Point Connectivity, Keeping office and entertainment together. - Built in 1150mAH rechargeable battery, fully charged at one time and long active life. You can enjoy up to 28 hours of hands-free calls and 32 hours of music time. - To clear the pairing record, long press the Mute Button and Siri/Google Button for 5 seconds at the same time after power on to clear the pairing history. How to Multi-Point Connectivity？ 1.Connect BTC28 with the first mobile phone 2.Turn off the Bluetooth feature on the first phone. BTC28 enters in pairing mode automatically 3.Connect BTC28 with the second phone; 4.Turn on the Bluetooth feature on the first phone, it'll reconnect with BTC268 automatically. 5.When two mobile phones A and B are connected at the same time, only one device can play music. When the mobile phone B plays music, it needs to suspend the music on device A. About the Multi-function Button: Press Once --- Answer Call/ End Call Press Two Seconds --- Reject the Call Double Click --- Redial Last Number Press Once --- Pause/ Play Music Rotate Right --- Increase Volume Rotate Left --- Decrease Volume Note: If there are other operational problems, Please refer to the user's manual Package Included: 1x Stereo Car Speakerphone 1x USB Charging Cable 1x Sun Visor Clip 1x User Manual