If you own a classic car with a cassette player, this Bluetooth cassette receiver allows you to continue enjoying music on your phone. You don't need to replace or modify your car to preserve its classic charm. This Bluetooth 5.0 cassette receiver is compatible with most smartphones and is ideal for home or car stereos. It is a box-type Bluetooth receiver for cars or other devices that do not have Bluetooth but want to receive Bluetooth signals. Simply adjust the player's audio equalizer settings to enjoy classic music. You can answer calls or control music via the receiver. Adjust volume, play/pause/skip music, and answer calls. Supports all phones, tablets, MP3 players, car stereos, headphones, HiFi audio systems, portable speakers, or other devices equipped with standard Bluetooth technology. Seamless stereo transmission provides high-quality sound, allowing you to enjoy music anytime, anywhere. The built-in battery provides up to 8 hours of playback and talk time, and up to 168 hours of standby time, fully charging in just 1.5 hours. A high-quality chip provides more stable and faster transmission while reducing power consumption, providing superior sound quality that protects your ears and makes driving less boring. Specifications: Color: Black Bluetooth version: 5.0 Rechargeable battery (lithium battery): Rechargeable battery capacity: 130 mAh Package contents: 1 x Cassette adapter 1 x USB charging cable