When you have a vintage car with a tape recorder, you can continue to enjoy the music on your phone with the cassette player's Bluetooth receiver. You don't need to replace or retrofit your car to avoid ruining its original classics. - The cassette player's Bluetooth 5.0 receiver is compatible with most smartphones and is ideal for home or car stereo systems. This is a box-type Bluetooth receiver for cars or devices that do not have Bluetooth and want to receive Bluetooth signals. Just adjust the audio equalizer settings on the player and you will get the music classics. - You can answer phone calls or control the music on the receiver. Change volume, play/pause/skip music, answer calls. Supports all phones, tablets, MP3 players, car stereos, headphones, Hi-Fi, portable speakers or other devices equipped with standard Bluetooth technology. Seamlessly transmit stereo sound for high-quality sound, so you can enjoy your music anywhere and anytime. - Built-in battery provides up to 8 hours of play and talk time, 168 hours of standby time, only takes 1.5 hours to fully charge. Premium Chip provides more stable and faster transmission with lower power consumption, which can represent a superior sound performance to pamper your ear and never feel bored while driving. Specifications: Color: Black Bluetooth Version: 5.0 Rechargeable Battery (Lithium Battery): Rechargeable Battery Capacity: 130mAh Package Includes: 1 x Cassette Adapter 1 x USB Charging Cable