The USB Car Bluetooth Receiver Industry-Leading Technology Listen and Talk Unique separation technology. Use your Bluetooth headset to answer the phone when listening to crystal clear music via our Bluetooth connection. Your phone can connect this USB Receiver and your headset at the same time. Step 1: Connect to the Bluetooth Receiver and Enjoy music Step 2: Turn on the Bluetooth headset, enter pairing mode, you can find the headset's Bluetooth name on your phone, click it, and then matched, Now recevier and headset connect with phone at the same time. The call comes, use the headset to answer the phone directly when you are listening to music. Superb Sound Able to transmit sound and data quickly and reliably with no compromise on sound quality. Small and Sleek Unobtrusive size allows for convenient placement. The contemporary and minimalist design perfectly complements your car's interior. Note: - Need plug USB cable or USB car charger to turn on. - After engine ignition, older stereos may require the USB cable to be unplugged and reinserted.If you want to buy bluetooth receiver with battery, you can check promotions on this listing.