【Stable Bluetooth 5.0 Tech】Equipped with the most extensive Bluetooth 5.0 connection technology, making it connect rapidly and stably. Basically, it can be connected to various mobile devices (mobile phones, MP3, tablets, laptops). Enjoy the convenience of Bluetooth connectivity, as well as the option to use a Micro SD card(up to 32 GB capacity) for music playback. | 【For Auido Devices with No Build-in Bluetooth】The Bluetooth receiver can realize the Bluetooth connection for the device (which does not have the Bluetooth function). In our daily life, such as some cars, wired earphones, home stereos, amplifiers, TVs and other devices without Bluetooth function, they can realize Bluetooth connection with mobile phones through this product. Let us fully enjoy the convenience and fun of wireless connection. | 【Lossless Audio Transmission】A stable Bluetooth connection ensures that audio transmission will not be interrupted. It can effectively reduce echo and background noise, and play clear music or voice. | 【Effortless Control & Smart Assistance】Combined handy music managing with advanced calling features, this product grants you seamless control for audio or phone calls. Adjust volume, switch tracks or answer right on the receiver, minimize distraction whether you're on trip or driving. Supporting voice assistance, you can freely interact with Siri or other voice assistants with the built-in microphone, to handle calls, receive navigation guidance, etc., fully enhances your hands-free experience. | 【Use it while charging】With its built-in battery, the Car Audio Cassette to Aux Adapter provides up to 10 hours of play and talk time. With the added functionality of simultaneous charging and usage, this cassette Bluetooth adapter enables you to power your device while using it. It only takes 1.5 hours to fully charge, ensuring you can enjoy uninterrupted music and conversations on the go. | 【Complete Package】1 Bluetooth Receiver, 1 3.5MM Connector, 1 USB Charging Cable and Product manual. We provide a 6-month replacement guarantee, ensuring your satisfaction with our product. If you encounter any issues or have any questions, please reach out to us, and we will strive to resolve any problems.