When you have a vintage car with a cassette player, this cassette Bluetooth receiver lets you stream music from your phone without modifying the audio system. - This Bluetooth 5.0 cassette adapter is compatible with most smartphones and works with home or car audio systems that lack built-in Bluetooth. It enables Bluetooth audio streaming for devices without native Bluetooth capability. Adjust your car stereo’s audio settings for optimal sound quality. - Control music playback and answer calls directly from the device: play, pause, skip tracks, adjust volume, and manage calls. Compatible with smartphones, tablets, MP3 players, car stereos, headphones, Hi-Fi systems, and portable speakers equipped with standard Bluetooth technology. Delivers seamless stereo audio transmission for sound. - Built-in rechargeable lithium-ion battery provides up to 8 hours of continuous playback or talk time and 168 hours of standby time. Fully charges in approximately 1.5 hours. Advanced chipset ensures stable, efficient Bluetooth transmission with low power consumption and enhanced audio performance. Specifications: Color: Black Bluetooth Version: 5.0 Battery: Rechargeable lithium-ion, 130 mAh Package Includes: 1 x Cassette Adapter 1 x USB Charging Cable