Crystal Clear Music Streaming: LENCENT T25 achieves full-duplex sound quality with its CVC noise and wind suppression technology and anti-static mechanical construction. You can use Bluetooth, USB flash drive ( 32GB) or micro SD card ( 32GB) to stream music to your car stereo. It supports the following music formats: WMA, MP3, WAV, APE and FLAC. Smart Dual USB Port and Safe Charging: It has 2 USB connections 5V 2.4A and 5V 1A, which allows you to charge two devices at once. Safe charging will be effectively ensured by the built-in features, which include intelligent temperature management, short circuit protection, over-current protection and over-voltage protection. Hands-Free Calling & Voice Navigation: While noise cancellation technology (CVC) provides an exceptional hands-free calling experience, Bluetooth provides a reliable connection. In addition, your phone app offers clear voice navigation. Car Battery Voltage Detection & Blue Atmosphere Light: The car voltage will be displayed when the FM transmitter is connected to the cigarette lighter. Always keep an eye on your car battery status to avoid trouble while driving. You can drive safely with the blue backlit circle surrounding this car charger. Wider Range & Compatibility: Most smartphones and other Bluetooth-enabled devices work perfectly with this Bluetooth transmitter. It will automatically establish a connection with the registered connected Bluetooth device once it is turned on. In addition, you can enjoy more reliable and consistent sound without interference thanks to the wider frequency range of 87.5MHz to 108MHz. Note: The data are all measured manually, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.