When you have a vintage car with a tape player, the cassette Bluetooth receiver allows you to enjoy music from your phone without replacing or modifying your car's original o system. The Cassette Bluetooth 5.0 receiver is compatible with most smartphones and works well with home or car o systems. This Bluetooth receiver is designed for cars or devices that lack built-in Bluetooth capability. Adjust the o equalization settings on your player to enjoy high-quality sound. Answer phone calls or control music directly from the receiver. Features include volume adjustment, play/pause, track skipping, and call answering. Supports smartphones, tablets, MP3 players, car stereos, headphones, Hi-Fi systems, portable speakers, and other devices equipped with standard Bluetooth technology. Delivers seamless stereo o transmission for an enhanced listening experience. Built-in rechargeable battery provides up to 8 hours of playback and talk time, with 168 hours of standby time. Fully charges in 1.5 hours. Advanced chipset ensures stable, fast transmission with low power consumption for superior o performance. Specifications: Color: Black Bluetooth Version: 5.0 Battery Type: Rechargeable lithium battery Battery Capacity: 130mAh Package Included: 1 x Cassette Adapter 1 x USB Charging Cable