Joyroom Bluetooth 5.3 Car Adapter Wireless Magnetic Audio Receiver MP3 Player with LED Display and 3.5mm AUX Input for Car Stereo Features: Bluetooth 5.3 Technology – Enjoy a stable wireless connection with reduced latency, faster pairing, and improved sound quality. Advanced CVC 8.0 noise cancellation and digital signal processing (DSP) technology ensure clear audio and voice during calls. Magnetic Design – Includes a metal mounting plate for easy attachment to your vehicle. The magnetic receiver allows for quick placement and removal while saving space and enabling instant wireless audio streaming in older car stereos. Long Battery Life – Provides up to 22 hours of continuous playback or talk time on a single charge. Recharges fully in approximately 2 hours via USB cable. Compact and portable for convenient use in the car or on the go. LED Backlight & Digital Display – Features colorful LED lighting for enhanced visual appeal and easier operation at night. Built-in digital display shows real-time battery status for convenience. Dual Device Pairing – Supports simultaneous connection to two Bluetooth devices, allowing seamless switching between music streaming and taking calls. Built-in Safety Protections – Includes overvoltage, overcurrent, short circuit, and overheating protection to ensure safe charging and reliable performance. Note: This device connects via 3.5mm AUX input and is designed for use with compatible car stereos and audio systems.