SaferCCTV(TM) Car Bluetooth Speakers,Portable Wireless In-Car Bluetooth 4.0 Speaker Hands-free Car Kit Speakerphone For iPhone Samsung and All Bluetooth-enabled Devices Blue Color Bluetooth 4.0 wireless hands-free kit, with A2DP profile for Smartpohne, Android, Apple iPhone 6 Plus, Google Nexus, Samsung Galaxy, Tablets, other media players, and more!, Can connection to 2 Bluetooth devices at same time In-car charger with a USB cable so you can charge on-the-go Automatically power on, using the most advanced vibration sensing technology, as long as you open your door, NX1 will automatically open your Bluetooth system, escort for your safe driving. Talk time: 20 hours, Stand-by time: 1000 hours, Charging time : 2 hours Using the most advanced speech recognition technology, just say the answer "yes" or "no" hang up the call when call coming, if you drive tired or tense in high-speed driving, do not want to say yes / no, will be in the 12s automatically answer, to bid farewell to the era of key operation, truly liberating your hands, let you drive safer!