Bluetooth 4.0 Visor Handsfree In-Car Speakerphone Car kit for for iPhone6 / 6 plus / 5S / 5 / 5C / 4S / 4, Ipod, Samsung Galaxy and other Settings block out background noise in the car better than other speakerphones. With the HD Microphone, DSP+EDR Strengthening noise cancellation technology. Your speakerphone's dual microphone noise cancellation and echo control,can connect to 2 Bluetooth devices simultaneously. Ultra Low Power: With this speakerphone you stay in control of the conversation without taking your hands off the wheel. Up to 17 hours talk time and Up to 40 days standby time. Automatically turns on and connects with your phone when you enter your car. When you're ready to leave it automatically turns off, saving battery life. luetooth 4.0, in-car speakerphone compatible speakerphone that enables you to takes hands-free call and listen to music while on the road. And it know who's calling and when it's time to recharge. Compatible with Bluetooth-enabled mobile phones, laptop, tablet, or MP3 player, etc.