Features 1. Universal Compatibility: Compatible with all cars and trucks equipped with cassette players. Utilizes the original car cassette player for CD playback without modification, easy to use. 2. Bluetooth 5.1 Technology: Features the latest Bluetooth 5.1 for a stable and fast wireless connection, enabling seamless music streaming. 3. Low Power Reminder: Includes a low voltage indicator and sound alert. Intelligent detection helps reduce battery drain caused by forgetting to power off. 4. Convenient Design: External charging structure allows music playback while charging, providing extended uninterrupted use. 5. Wireless Music Streaming: Stream music wirelessly from smartphones and other Bluetooth-enabled devices via the cassette receiver. Specification Item Type: Bluetooth Cassette Receiver Bluetooth Version: 5.1 Charging Voltage: DC 5V Signal to Noise Ratio: 90dB Built-in Battery: Yes (pre-installed) Battery Type: Button Battery Battery Model: CR1220 Battery Capacity: 40mAh Compatibility: Works with all vehicles equipped with a cassette player Package List 1 x Bluetooth Cassette Receiver 1 x Cable