1.CCC and CE product 2.Compatible with most of smart devices,like Android & ISO phones, GPS and digital cameras, etc. 3.Bluetooth hands-free answer phone. 4.Dual USB car charger,could connect more than one smart device. Feature: 1.This product has built-in bluetooth chipset,could connect the device that has bluetooth function. 2.Plug the device to the cigarette lighter,adjust the frequency after it turn on automatically to the car radio frequency. 3.Find C26S on your device, click it and pair with the device. 4.Once you pair it successfully, it would pair automatically, you don’t have to pair it again. Use Guide: 1. This device has built-in bluetooth chip,could connect hand held bluetooth device. 2. Put this device into the car cigarette port, this device will turn on automatically. After turnning on, you could adjust the frequency and pair it with the car radio. 3. When you pair it successfully, you could search the device called"C26S" on your hand held device, click to connect. 4. Once it pair successfully, it would pair automatically next time. Button Function: Call/Play Button: When there is call coming, you could answer it hands-free by pressing it. When you are about to playing music, you could press it to turn on/off. Long press it, it would enter the frequency state, you could press the last and next song button to adjust the frequency. Last/Next Song Button: You could play last song or next song by pressing this button. Long press, it could adjust the volume.